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Pandey, Ravindra ; Mukhopadhyay, S. ; Ramasesha, S. ; Das, Puspendu K. (2011) The structure of the pyridine-chloranil complex in solution: a surprise from depolarized hyper-Rayleigh scattering measurements Journal of Physical Chemistry B, 115 (47). pp. 13842-13846. ISSN 1089-5647

Thomas, Simil ; Pati, Y. A. ; Ramasesha, S. (2011) Nonlinear optical properties of stacked conjugated systems Crystal Growth & Design, 11 (5). pp. 1846-1854. ISSN 1528-7483

Sahoo, Shaon ; Ramasesha, S. (2011) Full spin and spatial symmetry adapted technique for correlated electronic hamiltonians: application to an icosahedral cluster International Journal of Quantum Chemistry, 112 (4). pp. 1041-1054. ISSN 0020-7608

Mukhopadhyay, S. ; Pandey, Ravindra ; Das, Puspendu K. ; Ramasesha, S. (2011) Geometry and quadratic nonlinearity of charge transfer complexes in solution: a theoretical study Journal of Chemical Physics, 134 (4). 044534_1-044534_8. ISSN 0021-9606

Dutta, Tirthankar ; Ramasesha, S. (2010) Double time window targeting technique: real-time DMRG dynamics in the Pariser-Parr-Pople model Physical Review B: Condensed Matter and Materials Physics, 82 (3). 035115_1-035115_15. ISSN 1098-0121

Soos, Z. G. ; Kumar, M. ; Ramasesha, S. ; Pascal Jr., R. A. (2010) 1:1 Alkali-TCNQ salts and the bond order wave (BOW) phase of half-filled linear Hubbard-type models Physica B: Condensed Matter, 405 (11). S353-S356. ISSN 0921-4526

Mukhopadhyay, S. ; Kanth, Raja Bhaskar ; Ramasesha, S. ; Patil, Satish (2010) Synthesis and characterization of a class of donor-acceptor conjugated molecules: experiments and theoretical calculations The Journal of Physical Chemistry A, 114 (13). pp. 4647-4654. ISSN 1089-5639

Kumar, Manoranjan ; Soos, Zoltán G. ; Sen, Diptiman ; Ramasesha, S. (2010) Modified density matrix renormalization group algorithm for the zigzag spin-½ chain with frustrated antiferromagnetic exchange: comparison with field theory at large J₂/J₁ Physical Review B: Condensed Matter and Materials Physics, 81 (10). 104406_1-104406_6. ISSN 1098-0121

Kumar, Manoranjan ; Ramasesha, S. ; Soos, Z. G. (2010) Bond-order wave phase, spin solitons, and thermodynamics of a frustrated linear spin-½ Heisenberg antiferromagnet Physical Review B: Condensed Matter and Materials Physics, 81 (5). 054413_1-054413_8. ISSN 1098-0121

Kumar, Manoranjan ; Ramasesha, S. (2010) Low-lying states of transverse substituted trans-polyacetylene and trans-polyacetylene: a comparative DMRG study Physical Review B: Condensed Matter and Materials Physics, 81 (3). 035115_1-035115_8. ISSN 1098-0121

Das, Mousumi ; Ramasesha, S. (2010) Fluorescent resonant excitation energy transfer in linear polyenes Journal of Chemical Physics, 132 (12). 124109_1-124109_10. ISSN 0021-9606

Mukhopadhyay, S. ; Ramasesha, S. ; Guha, S. (2010) Role of the triplet state in the green emission peak of polyfluorene films: a time evolution study Journal of Chemical Physics, 132 (4). 044104_1-044104_12. ISSN 0021-9606

Rincón, Julián ; Hallberg, K. ; Aligia, A. A. ; Ramasesha, S. (2009) Quantum interference in coherent molecular conductance Physical Review Letters, 103 (26). 266807_1-266807_4. ISSN 0031-9007

Ramasesha, S. ; Sahoo, Shaon ; Raghunathan, Rajamani ; Sen, Diptiman (2009) Computing magnetic anisotropy constants of single molecule magnets Journal of Chemical Sciences, 121 (5). pp. 823-837. ISSN 0253-4134

Arif, M. ; Mukhopadhyay, S. ; Ramasesha, S. ; Guha, S. (2009) The role of triplet states in the emission mechanism of polymer light-emitting diodes EPL: Europhysics Letters, 87 (5). 57008_1-57008_5. ISSN 0295-5075

Ramasesha, S. (2009) Lighting the world with molecules Resonance: Journal of Science Education, 14 (8). pp. 782-798. ISSN 0971-8044

Sutter, Jean-Pascal ; Dhers, Sbastien ; Rajamani, Raghunathan ; Ramasesha, S. ; Costes, Jean-Pierre ; Duhayon, Carine ; Vendier, Laure (2009) Hetero-metallic {3d-4f-5d} complexes: preparation and magnetic behavior of trinuclear [(L^Me2Ni-Ln){W(CN)₈}] compounds (Ln=Gd, Tb, Dy, Ho, Er, Y; L^Me2=Schiff base) and variable SMM characteristics for the Tb derivative Inorganic Chemistry, 48 (13). pp. 5820-5828. ISSN 0020-1669

Mahata, Partha ; Raghunathan, Rajamani ; Banerjee, Debamalya ; Sen, Diptiman ; Ramasesha, S. ; Bhat, S. V. ; Natarajan, S. (2009) Fluorite and mixed-metal kagome-related topologies in metal-organic framework compounds: synthesis, structure, and properties Chemistry - An Asian Journal, 4 (6). pp. 936-947. ISSN 1861-4728

Kumar, Manoranjan ; Ramasesha, S. ; Soos, Z. G. (2009) Tuning the bond-order wave phase in the half-filled extended Hubbard model Physical Review B: Condensed Matter and Materials Physics, 79 (3). 035102_1-035102_8. ISSN 1098-0121

Dhers, Sébastien ; Sahoo, Shaon ; Costes, Jean-Pierre ; Duhayon, Carine ; Ramasesha, S. ; Sutter, Jean-Pascal (2009) 1-D hydrogen-bonded organization of hexanuclear {3d-4f-5d} complexes: evidence for slow relaxation of the magnetization for [{L^Me2Ni(H₂O)Ln(H₂O)_4.5}₂{W(CN)₈ }₂] with Ln=Tb and Dy CrystEngComm, 11 (10). pp. 2078-2083. ISSN 1466-8033

Kumar, M. ; Sarkar, S. ; Ramasesha, S. (2009) Quantum phase analysis of 1D superconducting quantum dot lattice using extended Bose-Hubbard model The European Physical Journal B - Condensed Matter and Complex Systems, 72 (4). pp. 503-507. ISSN 1434-6028

Mukhopadhyay, S. ; Ramasesha, S. (2009) Study of linear and nonlinear optical properties of dendrimers using density matrix renormalization group method Journal of Chemical Physics, 131 (7). 074111_1-074111_9. ISSN 0021-9606

Raghunathan, Rajamani ; Ramasesha, S. ; Sen, Diptiman (2008) Theoretical approach for computing magnetic anisotropy in single molecule magnets Physical Review B: Condensed Matter and Materials Physics, 78 (10). 104408_1-104408_8. ISSN 1098-0121

Sahoo, Shaon ; Rajamani, Raghunathan ; Ramasesha, S. ; Sen, Diptiman (2008) Fully symmetrized valence-bond based technique for solving exchange Hamiltonians of molecular magnets Physical Review B: Condensed Matter and Materials Physics, 78 (5). 054408_1-054408_7. ISSN 1098-0121

Mukhopadhyay, S. ; Topham, B. J. ; Soos, Z. G. ; Ramasesha, S. (2008) Neutral and charged excited states in polar organic films: origin of unusual electroluminescence in tri-p-tolylamine-based hole conductors The Journal of Physical Chemistry A, 112 (31). pp. 7271-7279. ISSN 1089-5639

Kumar, Manoranjan ; Ramasesha, S. ; Pascal Jr., R. A. ; Soos, Z. G. (2008) Dimerization transition of alkali-TCNQ salts: charge degrees of freedom near the CDW boundary EPL: Europhysics Letters, 83 (3). 37001_1-37001_5. ISSN 0295-5075

Venkatakrishnan, Thengarai S. ; Desplanches, Cèpdric ; Rajamani, Raghunathan ; Guionneau, Philippe ; Ducasse, Laurent ; Ramasesha, S. ; Sutter, Jean-Pascal (2008) Tetranuclear [{Ni(HL³)}{W(CN)₈}]₂ square: a case of antiferromagnetic {Ni^IIW^V} interactions Inorganic Chemistry, 47 (11). pp. 4854-4860. ISSN 0020-1669

Raghunathan, Rajamani ; Ramasesha, S. ; Mathonière, Corine ; Marvaud, Valérie (2008) A kinetic model for photoswitching of magnetism in the high spin molecule [Mo(IV)(CN)₂(CN-Cu(II)(tren))₆](ClO₄)₈ Physical Chemistry Chemical Physics, 10 (35). pp. 5469-5474. ISSN 1463-9076

Venkatakrishnan, Thengarai S. ; Rajamani, Raghunathan ; Ramasesha, S. ; Sutter, Jean-Pascal (2007) Synthesis, crystal structure, and magnetic properties of hexanuclear [{MnL₂}₄{Nb(CN)₈}₂] and nonanuclear [{MnL₂}₆{Nb(CN)₈}₃] heterometallic clusters (L=bpy, phen) Inorganic Chemistry, 46 (23). pp. 9569-9574. ISSN 0020-1669

Soos, Z. G. ; Mukhopadhyay, S. ; Ramasesha, S. (2007) Polar organic films: transport gap, charge–dipole interaction and electroluminescence of tritolylamine (TTA) derivatives Chemical Physics Letters, 442 (4-6). pp. 285-288. ISSN 0009-2614

Kumar, Manoranjan ; Ramasesha, S. ; Sen, Diptiman ; Soos, Z. G. (2007) DMRG study of scaling exponents in spin-½ Heisenberg chains with dimerization and frustration Physical Review B: Condensed Matter and Materials Physics, 75 (5). 052404_1-052404_4. ISSN 1098-0121

Naik, Sunil G. ; Mukherjee, Arindam ; Raghunathan, Rajamani ; Nethaji, Munirathinam ; Ramasesha, Suryanarayanasastry ; Chakravarty, Akhil R. (2006) Magneto-structural study on a tetracopper(II) schiff base complex stabilizing a decanuclear water aggregate Polyhedron, 25 (10). pp. 2135-2141. ISSN 0277-5387

Yan, Y. ; Mazumdar, S. ; Ramasesha, S. (2006) Dimerization-induced enhancement of the spin gap in the quarter-filled two-leg rectangular ladder Physical Review B: Condensed Matter and Materials Physics, 73 (22). 224418_1-224418_6. ISSN 1098-0121

Mukherjee, Arindam ; Raghunathan, Rajamani ; Saha, Manas K. ; Nethaji, Munirathinam ; Ramasesha, Suryanarayanasastry ; Chakravarty, Akhil R. (2006) Magnetostructural studies on ferromagnetically coupled copper(II) cubanes of schiff-base ligands Chemistry: A European Journal, 11 (10). pp. 3087-3096. ISSN 0947-6539

Raghunathan, Rajamani ; Sutter, Jean-Pascal ; Ducasse, Laurent ; Desplanches, Cédric ; Ramasesha, S. (2006) Microscopic model for high-spin versus low-spin ground state in [Ni₂M(CN)₈](M=Mo^V,W^V,Nb^IV) magnetic clusters Physical Review B: Condensed Matter and Materials Physics, 73 (10). 104438_1-104438_8. ISSN 1098-0121

Raghunathan, Rajamani ; Ramasesha, S. ; Mathonière, Corine ; Marvaud, Valérie (2006) Microscopic model for photoinduced magnetism in the molecular complex [Mo(IV)(CN)₂(CN-CuL)₆]⁸⁺ perchlorate Physical Review B: Condensed Matter and Materials Physics, 73 (4). 045131_1-045131_7. ISSN 1098-0121

Ramasesha, S. (2006) Experimental determination of the Avogadro constant Resonance: Journal of Science Education, 11 (1). pp. 79-87. ISSN 0971-8044

Das, Mosumi ; Ramasesha, S. (2006) A density matrix renormalization group study of low-lying excitations of polythiophene within a Pariser-Parr-Pople model Journal of Chemical Sciences, 118 (1). pp. 67-78. ISSN 0253-4134

Ramasesha, S. ; Raghunathan, R. ; Ducasse, L. ; Sutter, J. -P. ; Mathoniere, C. (2006) Microscopic model for superexchange interactions and photomagnetism in binuclear transition metal complexes Phase Transitions: A Multinational Journal, 79 (8). pp. 637-654. ISSN 0141-1594

Fritsch, A. ; Ducasse, L. ; Castet, F. ; Ramasesha, S. (2005) Charge transport in DNA strands using fragment orbital theory Synthetic Metals, 155 (2). pp. 418-421. ISSN 0379-6779

Das, Mousumi ; Ramasesha, S. ; Mazumdar, S. (2005) Role of electron-electron interactions on spin effects in electron-hole recombination in organic light emitting diodes Synthetic Metals, 155 (2). pp. 270-273. ISSN 0379-6779

Arul Murugan, N. ; Rao, R. S. ; Yashonath, S. ; Ramasesha, S. ; Godwal, B. K. (2005) High-pressure study of adamantane: variable shape simulations up to 26 Gpa Journal of Physical Chemistry B, 109 (36). pp. 17296-17303. ISSN 1089-5647

Jha, Prakash Chandra ; Pati, Y. Anusooya ; Ramasesha, S. (2005) Nonlinear optical properties of stilbene and azobenzene derivatives containing azaphosphane groups Molecular Physics, 103 (14). pp. 1859-1873. ISSN 0026-8976

Ravi Chandra, V. ; Ramasesha, S. ; Sen, Diptiman (2004) Magnetic properties of a helical spin chain with alternating isotropic and anisotropic spins: magnetization plateaus and finite entropy Physical Review B: Condensed Matter and Materials Physics, 70 (14). 144404_1-144404_8. ISSN 1098-0121

Jha, Prakash Chandra ; Das, Mousumi ; Ramasesha, S. (2004) Two-photon absorption cross sections of trans-stilbene, and 7,8-disubstituted stilbenes in different molecular conformations: a model exact study The Journal of Physical Chemistry A, 108 (30). pp. 6279-6285. ISSN 1089-5639

Arul Murugan, N. ; Jha, Prakash Chandra ; Yashonath, S. ; Ramasesha, S. (2004) High pressure phase of biphenyl at room temperature: a Monte Carlo study The Journal of Physical Chemistry B, 108 (13). pp. 4178-4184. ISSN 1089-5647

Chakravarty, Akhil R. ; Mukherjee, Arindam ; Saha, Manas K. ; Rudra, Indranil ; Ramasesha, Suryanarayanasastry ; Nethaji, Munirathinam (2004) Synthesis, crystal structure and magnetic properties of quasi-linear tetranuclear copper(II) Schiff base complexes formed by covalent linkage of asymmetrically dibridged dicopper(II) units Inorganica Chimica Acta, 357 (4). pp. 1077-1082. ISSN 0020-1693

Pati, Swapan K. ; Ramasesha, S. (2004) Model exact many-body studies of charge transfer through bridged systems Journal of Physics: Condensed Matter, 16 (6). pp. 989-996. ISSN 0953-8984

Ramasesha, S. ; Mazumdar, S. ; Tandon, Kunj ; Das, Mousumi (2003) Electron correlation effects in electron–hole recombination and triplet–triplet scattering in organic light emitting diodes Synthetic Metals, 139 (3). pp. 917-920. ISSN 0379-6779

Mukherjee, Arindam ; Rudra, Indranil ; Naik, Sunil G. ; Ramasesha, Suryanarayanasastry ; Nethaji, Munirathinam ; Chakravarty, Akhil R. (2003) Covalent linkage of the type-2 and type-3 structural mimics to model the active site structure of multicopper oxidases: synthesis and magneto- structural properties of two angular trinuclear copper(II) complexes Inorganic Chemistry, 42 (18). pp. 5660-5668. ISSN 0020-1669

Rao, C. N. R. ; Paul, Geo ; Choudhury, Amitava ; Sampathkumaran, E. V. ; Raychaudhuri, Arup K. ; Ramasesha, S. ; Rudra, Indranil (2003) Properties of a mixed-valent iron compound with the kagomélattice Physical Review B: Condensed Matter and Materials Physics, 67 (13). 134425_1-134425_5. ISSN 1098-0121

Raghu, C. ; Pati, Y. Anusooya ; Ramasesha, S. (2003) A density matrix renormalization group study of polyacene Synthetic Metals, 137 (1-3). pp. 1073-1074. ISSN 0379-6779

Tandon, Kunj ; Ramasesha, S. ; Mazumdar, S. (2003) Electron correlation effects in electron-hole recombination in organic light-emitting diodes Physical Review B: Condensed Matter and Materials Physics, 67 (4). 045109_1-045109_19. ISSN 1098-0121

Mukherjee, Arindam ; Rudra, Indranil ; Nethaji, Munirathinam ; Ramasesha, Suryanarayanasastry ; Chakravarty, Akhil R. (2003) Synthesis, crystal structure, and magnetic properties of an alkoxo-hydroxo-bridged octanuclear copper(II) complex showing chemically significant hydrogen-bonding interactions involving a metallamacrocyclic core Inorganic Chemistry, 42 (2). pp. 463-468. ISSN 0020-1669

Raghu, C. ; Anusooya Pati, Y. ; Ramasesha, S. (2002) Density-matrix renormalization-group study of low-lying excitations of polyacene within a Pariser-Parr-Pople model Physical Review B: Condensed Matter and Materials Physics, 66 (3). 035116_1-035116_11. ISSN 1098-0121

Rudra, Indranil ; Ramasesha, S. ; Sen, Diptiman (2002) Model exact low-lying states and spin dynamics in ferric wheels: Fe₆ to Fe₁₂ Physical Review B: Condensed Matter and Materials Physics, 66 (1). 014441_1-014441_9. ISSN 1098-0121

Rudra, Indranil ; Raghu, C. ; Ramasesha, S. (2002) Exchange interaction in binuclear complexes with rare-earth and copper ions: a many-body model study Physical Review B: Condensed Matter and Materials Physics, 65 (22). 224411_1-224411_9. ISSN 1098-0121

Raghu, C. ; Anusooya Pati, Y. ; Ramasesha, S. (2002) Structural and electronic instabilities in polyacenes: density-matrix renormalization group study of a long-range interacting model Physical Review B: Condensed Matter and Materials Physics, 65 (15). 155204_1-155204_9. ISSN 1098-0121

Jha, Prakash Chandra ; Krishnan, Anu ; Das, Puspendu K. ; Ramasesha, S. (2002) Nonlinear optical properties of linear chain phosphazenes, (PN)_x Journal of Chemical Physics, 117 (6). pp. 2873-2881. ISSN 0021-9606

Rudra, Indranil ; Ramasesha, S. ; Sen, Diptiman (2001) An alternate model for magnetization plateaus in the molecular magnet V₁₅ Journal of Physics: Condensed Matter, 13 (50). pp. 11717-11725. ISSN 0953-8984

Raghu, C. ; Rudra, Indranil ; Sen, Diptiman ; Ramasesha, S. (2001) Quantum phenomena in magnetic nano clusters Proceedings of the Indian Academy of Sciences - Chemical Sciences, 113 (5&6). pp. 459-486. ISSN 0253-4134

Raghu, C. ; Rudra, Indranil ; Sen, Diptiman ; Ramasesha, S. (2001) Properties of low-lying states in some high-nuclearity Mn, Fe, and V clusters: exact studies of Heisenberg models Physical Review B: Condensed Matter and Materials Physics, 64 (6). 064419_1-064419_9. ISSN 1098-0121

Rudra, Indranil ; Ramasesha, S. ; Sen, Diptiman (2001) Magnetization of Mn₁₂ acetate in a slowly varying magnetic field: a quantum mechanical study Physical Review B: Condensed Matter and Materials Physics, 64 (1). 014408_1-014408_8. ISSN 1098-0121

Wohlgenannt, M. ; Tandon, Kunj ; Mazumdar, S. ; Ramasesha, S. ; Vardeny, Z. V. (2001) Formation cross-sections of singlet and triplet excitons in π-conjugated polymers Nature, 409 (6819). pp. 494-497. ISSN 0028-0836

Raghu, C. ; Rudra, Indranil ; Ramasesha, S. ; Sen, Diptiman (2000) Evaluation of low-energy effective Hamiltonian techniques for coupled spin triangles Physical Review B: Condensed Matter and Materials Physics, 62 (14). pp. 9484-9492. ISSN 1098-0121

Pati, Swapan K. ; Ramasesha, S. ; Shuai, Z. ; Brédas, J. L. (1999) Dynamical nonlinear optical coefficients from the symmetrized density-matrix renormalization-group method Physical Review B: Condensed Matter and Materials Physics, 59 (23). pp. 14827-14830. ISSN 1098-0121

Anusooya, Y. ; Pati, Swapan K. ; Ramasesha, S. (1999) Density-matrix renormalization group studies of metal-halogen chains within a two-band extended Peierls-Hubbard model Journal of Physics: Condensed Matter, 11 (11). pp. 2395-2412. ISSN 0953-8984

Tandon, Kunj ; Lal, Siddhartha ; Pati, Swapan K. ; Ramasesha, S. ; Sen, Diptiman (1999) Magnetization properties of some quantum spin ladders Physical Review B: Condensed Matter and Materials Physics, 59 (1). pp. 396-410. ISSN 1098-0121

Mazumdar, S. ; Ramasesha, S. ; Torsten Clay, R. ; Campbell, David K. (1999) Theory of coexisting charge- and spin-density waves in (TMTTF)₂Br,(TMTSF)₂PF₆, and α-(BEDT-TTF)₂MHg(SCN)₄ Physical Review Letters, 82 (7). pp. 1522-1525. ISSN 0031-9007

Shuai, Z. ; Brédas, J. L. ; Pati, S. K. ; Ramasesha, S. (1998) Exciton binding energy in the strong correlation limit of conjugated chains Physical Review B: Condensed Matter and Materials Physics, 58 (23). pp. 15329-15332. ISSN 1098-0121

Srinivasan, Bhargavi ; Ramasesha, S. (1998) Structural instability in polyacene: a projector quantum Monte Carlo study Physical Review B: Condensed Matter and Materials Physics, 57 (15). pp. 8927-8933. ISSN 1098-0121

Anusooya, Y. ; Chakrabarti, Aparna ; Pati, Swapan K. ; Ramasesha, S. (1998) Ring currents in condensed ring systems International Journal of Quantum Chemistry, 70 (3). pp. 503-513. ISSN 0020-7608

Srinivasan, Bhargavi ; Kahn, Oliver ; Ramasesha, S. (1998) Spin populations in one-dimensional alternant spin systems: a theoretical approach Journal of Chemical Physics, 109 (14). pp. 5770-5777. ISSN 0021-9606

Shuai, Z. ; Brédas, J. L. ; Pati, S. K. ; Ramasesha, S. (1997) Quantum-confinement effects on the ordering of the lowest-lying excited states in conjugated chains Physical Review B: Condensed Matter and Materials Physics, 56 (15). pp. 9298-9301. ISSN 1098-0121

Srinivasan, Bhargavi ; Ramasesha, S. ; Krishnamurthy, H. R. (1997) Estimation of properties of low-lying excited states of Hubbard models: a multiconfigurational symmetrized projector quantum Monte Carlo approach Physical Review B, 56 (11). pp. 6542-6554. ISSN 0163-1829

Shuai, Z. ; Pati, Swapan K. ; Su, W. P. ; Brédas, J. L. ; Ramasesha, S. (1997) Binding energy of 1B_u singlet excitons in the one-dimensional extended Hubbard-Peierls model Physical Review B: Condensed Matter and Materials Physics, 55 (23). pp. 15368-15371. ISSN 1098-0121

Shuai, Z. ; Pati, S. K. ; Brédas, J. L. ; Ramasesha, S. (1997) DMRG studies of the IB exciton binding energy and 1B/2A crossover in an extended Hubbard-Peierls model Synthetic Metals, 85 (1-3). pp. 1011-1014. ISSN 0379-6779

Ramasesha, S. ; Pati, Swapan K. ; Krishnamurthy, H. R. ; Shuai, Z. ; Bredas, J. L. (1997) Low-lying electronic excitations and nonlinear optic properties of polymers via symmetrized density matrix renormalization group method Synthetic Metals, 85 (1-3). pp. 1019-1022. ISSN 0379-6779

Pati, Swapan Kumar ; Chitra, R. ; Sen, Diptiman ; Ramasesha, S. ; Krishnamurthy, H. R. (1997) A comparative study of the phase diagrams of spin-½ and spin-1 antiferromagnetic chains with dimerization and frustration Journal of Physics: Condensed Matter, 9 (1). pp. 219-230. ISSN 0953-8984

Pati, Swapan K. ; Ramasesha, S. ; Sen, Diptiman (1997) Low-lying excited states and low-temperature properties of an alternating spin-1-spin-½ chain: a density-matrix renormalization-group study Physical Review B: Condensed Matter and Materials Physics, 55 (14). pp. 8894-8904. ISSN 1098-0121

Anusooya, Y. ; Pati, Swapan K. ; Ramasesha, S. (1997) Symmetrized density matrix renormalization group studies of the properties of low-lying states of the poly-para-phenylene system Journal of Chemical Physics, 106 (24). pp. 10230-10237. ISSN 0021-9606

Chakrabarti, Aparna ; Ramasesha, S. (1996) Properties of the low-lying electronic states of phenanthrene: exact PPP results International Journal of Quantum Chemistry, 60 (1). pp. 381-391. ISSN 0020-7608

Ramasesha, S. ; Pati, Swapan K. ; Krishnamurthy, H. R. ; Shuai, Z. ; Bredas, J. L. (1996) Symmetrized density-matrix renormalization-group method for excited states of hubbard models Physical Review B, 54 (11). pp. 7598-7601. ISSN 0163-1829

Srinivasan, Bhargavi ; Ramasesha, S. ; Krishnamurthy, H. R. (1996) Multiconfigurational symmetrized-projector quantum Monte Carlo method for low-lying excited states of the hubbard model Physical Review B, 54 (4). R2276-R2279. ISSN 0163-1829

Srinivasan, Bhargavi ; Ramasesha, S. ; Krishnamurthy, H. R. (1996) Symmetrized projector quantum Monte Carlo studies of the ground state of C₆₀ Physical Review B, 54 (3). pp. 1692-1702. ISSN 0163-1829

Srinivasan, Bhargavi ; Ramasesha, S. ; Krishnamurthy, H. R. (1996) Variational Monte Carlo and configuration interaction studies of C₆₀ and its fragments Journal of Physical Chemistry, 100 (27). pp. 11260-11269. ISSN 0022-3654

Pai, Ramesh V. ; Pandit, Rahul ; Krishnamurthy, H. R. ; Ramasesha, S. (1996) One-dimensional disordered bosonic hubbard model: a density-matrix renormalization group study Physical Review Letters, 76 (16). pp. 2937-2940. ISSN 0031-9007

Ramasesha, S. (1996) Electron-electron interactions in polyacetylene Proceedings of the Indian Academy of Sciences - Chemical Sciences, 96 (6). pp. 509-521. ISSN 0253-4134

Pati, S. ; Chitra, R. ; Sen, D. ; Krishnamurthy, H. R. ; Ramasesha, S. (1996) Phase diagram of the spin-one heisenberg system with dimerization and frustration Europhysics Letters, 33 (9). pp. 707-712. ISSN 0295-5075

Shuai, Z. ; Ramasesha, S. ; Brédas, J. L. (1996) Nonlinear optical properties of nitro-aniline and methyl-aniline compounds- an exact correction vector INDO-SDCI study Chemical Physics Letters, 250 (1). pp. 14-18. ISSN 0009-2614

Chakrabarti, Aparna ; Anusooya, Y. ; Ramasesha, S. (1996) Correlated electronic states of C₆₀ fragments Journal of Molecular Structure: Theochem, 361 (1-3). pp. 181-190. ISSN 0166-1280

Mandal, Pravat Kumar ; Manoharan, P. T. ; Sinha, Bhabadyuti ; Ramasesha, S. (1996) Diagrammatic valence bond studies on hemocyanin Theoretical Chemistry Accounts: Theory, Computation, and Modeling / Theoretica Chimica Acta, 93 (1). pp. 1-16. ISSN 1432-881X

Ray, Paresh Chandra ; Das, Puspendu Kumar ; Ramasesha, S. (1996) A comparative study of first hyperpolarizabilities of the acidic and basic forms of weak organic acids in water Journal of Chemical Physics, 105 (21). pp. 9633-9639. ISSN 0021-9606

Ramasesha, S. ; Shuai, Z. ; Brédas, J. L. (1995) Correction vector method for exact dynamic NLO coefficients in restricted configuration space Chemical Physics Letters, 245 (2-3). pp. 224-229. ISSN 0009-2614

Chitra, R. ; Pati, Swapan ; Krishnamurthy, H. R. ; Sen, Diptiman ; Ramasesha, S. (1995) Density-matrix renormalization-group studies of the spin-1/2 heisenberg system with dimerization and frustration Physical Review B, 52 (9). pp. 6581-6587. ISSN 0163-1829

Srinivasan, Bhargavi ; Ramasesha, S. (1995) A new mechanism for ferromagnetism in C⁶⁰-TDAE Fullerenes, Nanotubes, and Carbon Nanostructures, 3 (6). pp. 747-754. ISSN 1536-383X

Ramasesha, S. ; Sinha, B. ; Albert, I. D. L. (1994) Nature of exchange interactions in stacked radicals/radical-ions of cyclic polyenes Journal of Molecular Structure, 327 (2-3). pp. 173-180. ISSN 0022-2860

Anusooya, Y. ; Ramasesha, S. (1994) Lattice embedding and equilibrium geometry of metal-halogen chains in the two-band extended Hubbard model Proceedings of the Indian Academy of Sciences - Chemical Sciences, 106 (2). pp. 433-443. ISSN 0253-4134

Sinha, Bhabadyuti ; Ramasesha, S. (1993) Direct versus kinetic exchange in multiband models for organic ferromagnetism Physical Review B: Condensed Matter and Materials Physics, 48 (22). pp. 16410-16416. ISSN 1098-0121

Soos, Z. G. ; Ramasesha, S. ; Galvão, D. S. (1993) Band to correlated crossover in alternating Hubbard and Pariser-Parr-Pople chains: nature of the lowest singlet excitation of conjugated polymers Physical Review Letters, 71 (10). pp. 1609-1612. ISSN 0031-9007

Nimkar, Seva ; Sarma, D. D. ; Krishnamurthy, H. R. ; Ramasesha, S. (1993) Mean-field results of the multiple-band extended Hubbard model for the square-planar CuO₂ lattice Physical Review B, 48 (10). pp. 7355-7363. ISSN 0163-1829

Albert, I. D. L. ; Das, P. K. ; Ramasesha, S. (1993) Optical nonlinearities in symmetric cyanine dyes and related systems Journal of the Optical Society of America - B, 10 (8). pp. 1365-1371. ISSN 0740-3224

Soos, Z. G. ; Ramasesha, S. ; Galvão, D. S. ; Kepler, R. G. ; Etemad, S. (1993) Electronic excitations and alternation of conjugated polymers Synthetic Metals, 54 (1-3). pp. 35-47. ISSN 0379-6779

Ramasesha, S. ; Galvao, D. S. ; Soos, Z. G. (1993) Exact eigenstates of the Pariser-Parr-Pople model for anthracene Journal of Physical Chemistry, 97 (12). pp. 2823-2829. ISSN 0022-3654

Seshadri, Ram ; Rastogi, A. ; Bhat, S. V. ; Ramasesha, S. ; Rao, C. N. R. (1993) Molecular ferromagnetism in C₆₀·TDAE Solid State Communications, 85 (11). pp. 971-974. ISSN 0038-1098

Soos, Z. G. ; Ramasesha, S. ; Galvão, D. S. ; Etemad, S. (1993) Excitation and relaxation energies of trans-stilbene: confined singlet, triplet, and charged bipolarons Physical Review B: Condensed Matter and Materials Physics, 47 (4). pp. 1742-1753. ISSN 1098-0121

Chakrabarti, Aparna ; Albert, I. D. L. ; Ramasesha, S. ; Lalitha, S. ; Chandrasekhar, Jayaraman (1993) Is tetramethyleneethane a ground state triplet? Proceedings of the Indian Academy of Sciences - Chemical Sciences, 105 (1). pp. 53-62. ISSN 0253-4134

Ramasesha, S. ; Soos, Z. G. (1993) Symmetry adaptation of correlated states in the valence bond basis Journal of Chemical Physics, 98 (5). pp. 4015-4022. ISSN 0021-9606

Galvão, D. S. ; Soos, Z. G. ; Ramasesha, S. ; Etemad, S. (1993) A parametric method 3 (PM3) study of trans-stilbene Journal of Chemical Physics, 98 (4). pp. 3016-3021. ISSN 0021-9606

Albert, I. D. L. ; Pugh, D. ; Morley, J. O. ; Ramasesha, S. (1992) Linear and nonlinear optical properties of cumulenes and polyenynes: a model exact study Journal of Physical Chemistry, 96 (25). pp. 10160-10165. ISSN 0022-3654

Ramasesha, S. ; Albert, I. D. L. (1992) A comparative theoretical study of higher harmonic generation and electro-optic effects in polyene systems Chemical Physics Letters, 196 (3-4). pp. 287-293. ISSN 0009-2614

Soos, Z. G. ; Etemad, S. ; Galvão, D. S. ; Ramasesha, S. (1992) Fluorescence and topological gap of conjugated phenylene polymers Chemical Physics Letters, 194 (4-6). pp. 341-346. ISSN 0009-2614

Sarma, D. D. ; Krishnamurthy, H. R. ; Nimkar, Seva ; Ramasesha, S. ; Mitra, P. P. ; Ramakrishnan, T. V. (1992) Electronic structure of high-T_c superconductors and related compounds Pramana - Journal of Physics, 38 (5). L531-L538. ISSN 0304-4289

Mandal, Pravat K. ; Sinha, Bhabadyuti ; Manoharan, P. T. ; Ramasesha, S. (1992) Theoretical studies of the spin states of macrocyclic aza-amido binuclear copper (II) complexes Chemical Physics Letters, 191 (5). pp. 448-454. ISSN 0009-2614

Srinivasan, Bhargavi ; Ramasesha, S. (1992) Approximate VB-MO schemes for excitation gaps in Hubbard models Solid State Communications, 81 (10). pp. 831-835. ISSN 0038-1098

Rao, C. N. R. ; Rao, K. J. ; Ramasesha, S. ; Sarma, D. D. ; Yashonath, S. (1992) Physical chemistry of solids Annual Reports on the Progress of Chemistry, Section C: Physical Chemistry, 89 . pp. 179-234. ISSN 0260-1826

Ramasesha, S. ; Rao, C. N. R. (1991) Dependence of the polarizability of the Cu₄O₈ cluster on the doping, the weight of the oxygen-hole state, and the excitation gaps in the three-band Hubbard model Physical Review B: Condensed Matter and Materials Physics, 44 (13). pp. 7046-7050. ISSN 1098-0121

Albert, I. D. L. ; Ramasesha, S. (1991) Role of σ-π interactions on linear and nonlinear susceptibilities in polyenes Chemical Physics Letters, 182 (3-4). pp. 351-356. ISSN 0009-2614

Sinha, Bhabadyuti ; Ramasesha, S. (1991) A theoretical study of spin excitations in [2,2]-paracyclophane skeleton substituted with two dicarbene units Chemical Physics Letters, 182 (2). pp. 180-186. ISSN 0009-2614

Ramasesha, S. ; Sinha, Bhabadyuti (1991) Theoretical study of spin interactions in stacked acetylene radical ions Chemical Physics Letters, 179 (4). pp. 379-384. ISSN 0009-2614

Rao, C. N. R. ; Ramasesha, S. ; Sarma, D. D. ; Santra, A. K. (1991) Dominant role of the Cu---O charge-transfer energy, electronic polarizability and associated factors in the superconductivity of cuprates Solid State Communications, 77 (9). pp. 709-711. ISSN 0038-1098

Albert, I. D. L. ; Das, Puspendu K. ; Ramasesha, S. (1991) Second-harmonic generation and electronic structure of polymethineimines: a theoretical study Chemical Physics Letters, 176 (2). pp. 217-224. ISSN 0009-2614

Ramasesha, S. ; Albert, I. D. L. ; Sinha, Bhabadyuti (1991) Optical and magnetic properties of the exact PPP states of biphenyl Molecular Physics, 72 (3). pp. 537-547. ISSN 1362-3028

Albert, I. D. L. ; Ramasesha, S. ; Das, P. K. (1991) Properties of some low-lying electronic states in polymethineimines and poly(2,3-diazabutadienes) Physical Review B, 43 (9). pp. 7013-7019. ISSN 0163-1829

Ramasesha, S. ; Das, Krishna (1990) Valence-bond theory of the Kondo lattice model in one dimension Physical Review B: Condensed Matter and Materials Physics, 42 (16). pp. 10682-10695. ISSN 1098-0121

Sinha, Bhabadyuti ; Albert, I. D. L. ; Ramasesha, S. (1990) Stability of the high-spin ground state in alternant π-conjugated organic molecules Physical Review B: Condensed Matter and Materials Physics, 42 (14). pp. 9088-9097. ISSN 1098-0121

Ramasesha, S. ; Albert, I. D. L. (1990) Model exact study of DC-electric-field-induced second-harmonic-generation coefficients in polyene systems Physical Review B: Condensed Matter and Materials Physics, 42 (13). pp. 8587-8594. ISSN 1098-0121

Ramasesha, S. ; Das, Puspendu K. (1990) Second harmonic generation coefficients in push-pull polyenes: a model exact study Chemical Physics, 145 (3). pp. 343-353. ISSN 0301-0104

Albert, I. D. L. ; Ramasesha, S. (1990) Sudden polarization in push-pull polyenes: a model exact study Journal of Physical Chemistry, 94 (17). pp. 6540-6543. ISSN 0022-3654

Ramasesha, S. (1990) A new algorithm for solving large inhomogeneous linear system of algebraic equations Journal of Computational Chemistry, 11 (5). pp. 545-547. ISSN 0192-8651

Albert, I. D. L. ; Das, Puspendu K. ; Ramasesha, S. (1990) A model exact calculation of SHG coefficients in polysubstituted push-pull polyenes Chemical Physics Letters, 168 (5). pp. 454-460. ISSN 0009-2614

Ramasesha, S. ; Albert, I. D. L. (1990) Sudden polarization in interacting model π systems: an exact study Chemical Physics, 142 (3). pp. 395-402. ISSN 0301-0104

Albert, I. D. L. ; Ramasesha, S. (1989) Intermolecular interactions in π-conjugated systems: application to polyenes Physical Review B: Condensed Matter and Materials Physics, 40 (12). pp. 8516-8521. ISSN 1098-0121

Sarma, D. D. ; Ramasesha, S. ; Taraphder, A. (1989) Hole pairing within an extended Anderson impurity model applicable to the high-T_c cuprates Physical Review B: Condensed Matter and Materials Physics, 39 (16). pp. 12286-12289. ISSN 1098-0121

Ramasesha, S. (1989) Effects of electron correlations in conjugated organic molecules and solids Journal of Molecular Structure, 194 . pp. 149-162. ISSN 0022-2860

Soos, Z. G. ; Hayden, G. W. ; Ramasesha, S. (1989) π-Electronic structure of conjugated polymers Solid State Ionics, 32-33 . pp. 567-574. ISSN 0167-2738

Ramasesha, S. ; Albert, I. D. L. (1989) Exact static polarizabilities of correlated finite model systems Chemical Physics Letters, 154 (5). pp. 501-504. ISSN 0009-2614

Albert, I. D. L. ; Ramasesha, S. (1989) Numerically exact study of polarizabilities and hyperpolarizabilities of correlated conjugated organic modelst Molecular Crystals and Liquid Crystals, 168 . pp. 95-101. ISSN 1542-1406

Soos, Z. G. ; Ramasesha, S. (1989) Valence bond approach to exact nonlinear optical properties of conjugated systems Journal of Chemical Physics, 90 (2). pp. 1067-1076. ISSN 0021-9606

Mazumdar, S. ; Ramasesha, S. (1988) Organic superconductivity: an experiment based theory Synthetic Metals, 27 (1-2). A105-A113. ISSN 0379-6779

Ramasesha, S. ; Soos, Z. G. (1988) Exact dynamic non-linear susceptibilities of finite correlated models Chemical Physics Letters, 153 (2-3). pp. 171-175. ISSN 0009-2614

Das, Krishna ; Ramasesha, S. (1988) Valence bond analysis of the Kondo chain Hamiltonian Solid State Communications, 66 (10). pp. 1047-1051. ISSN 0038-1098

Sreedhar, K. ; Ganguly, P. ; Ramasesha, S. (1988) Investigations on Bi₂CuO₄: a quasi-one-dimensional oxide system Journal of Physics C: Solid State Physics, 21 (6). pp. 1129-1136. ISSN 0022-3719

Ramasesha, S. (1987) Estimation of correlation energy and the exchange constant in yttrium barium copper oxides Chemical Physics Letters, 141 (5). pp. 401-404. ISSN 0009-2614

Ramasesha, S. ; Das, Krishna (1987) Static spin correlations in singlet states via triplet overlap integrals Chemical Physics Letters, 138 (5). pp. 462-464. ISSN 0009-2614

Ramasesha, S. (1986) A diagrammatic valence bond method for configuration interaction calculations in atoms and molecules Chemical Physics Letters, 130 (6). pp. 522-525. ISSN 0009-2614

Ramasesha, S. ; Soos, Z. G. (1985) Static spin correlations in alternant quantum cell models Physical Review B: Condensed Matter and Materials Physics, 32 (8). pp. 5368-5374. ISSN 1098-0121

Soos, Z. G. ; Harding, R. H. ; Ramasesha, S. (1985) Charge-transfer excitations in partly-inoic complexes Molecular Crystals and Liquid Crystals, 125 . pp. 59-70. ISSN 1542-1406

Soos, Z. G. ; Ramasesha, S. (1985) Segment model for polyacetylene Molecular Crystals and Liquid Crystals, 118 . pp. 31-39. ISSN 1542-1406

Ramasesha, S. (1984) An explanation of the phenomenon of polytypism Pramana - Journal of Physics, 23 (6). pp. 745-749. ISSN 0304-4289

Ramasesha, S. ; Soos, Z. G. (1984) Magnetic and optical properties of exact PPP states of naphthalene Chemical Physics, 91 (1). pp. 35-42. ISSN 0301-0104

Ramasesha, S. ; Soos, Z. G. (1984) Diagrammatic valence-bond theory for finite model Hamiltonians International Journal of Quantum Chemistry, 25 (6). pp. 1003-1021. ISSN 0020-7608

Soos, Z. G. ; Ramasesha, S. (1984) Valence-bond theory of linear Hubbard and Pariser-Parr-Pople models Physical Review B: Condensed Matter and Materials Physics, 29 (10). pp. 5410-5422. ISSN 1098-0121

Ramasesha, S. ; Soos, Z. G. (1984) Optical excitations of even and odd polyenes with molecular PPP correlations Synthetic Metals, 9 (2). pp. 283-294. ISSN 0379-6779

Ramasesha, S. ; Soos, Z. G. (1984) Correlated states in linear polyenes, radicals, and ions: exact PPP transition moments and spin densities Journal of Chemical Physics, 90 (2). pp. 3278-3287. ISSN 0021-9606

Soos, Z. G. ; Ramasesha, S. (1983) Spin densities and correlations in regular polyene radicals Physical Review Letters, 51 (26). pp. 2374-2377. ISSN 0031-9007

Soos, Z. G. ; Ramasesha, S. (1983) Exact PPP excitation energies and oscillator strength of octatetraene and decapentaene Chemical Physics Letters, 101 (1). pp. 34-37. ISSN 0009-2614

Ramasesha, S. ; Soos, Z. G. (1983) Critical exponents for alternation in Heisenberg antiferromagnetic chains Solid State Communications, 46 (7). pp. 509-511. ISSN 0038-1098

Callaway, J. ; Ramasesha, S. ; Kanhere, D. G. (1983) A linear approximation in self-consistent density functional calculations for atomic clusters Physics Letters A, 94 (3-4). pp. 139-142. ISSN 0375-9601

Ramasesha, S. (1982) A phenomenological model for semiconductor-metal transition in mixed conductors Journal of Solid State Chemistry, 41 (3). pp. 333-337. ISSN 0022-4596

Goodenough, J. B. ; Ramasesha, S. (1982) Further evidence for the coexistence of localized and itinerant 3d electrons in La₂NiO₄ Materials Research Bulletin, 17 (3). pp. 383-390. ISSN 0025-5408

Yashonath, S. ; Krishnamurthy, Bani ; Ramasesha, S. ; Rao, C. N. R. (1982) Monte Carlo simulation of mictomagnets Zeitschrift für Physik B: Condensed Matter, 46 (4). pp. 341-346. ISSN 0722-3277

Uppal, M. K. ; Ramasesha, S. ; Rao, C. N. R. (1980) Computer simulation of polytypes Acta Crystallographica Section A, 36 . pp. 356-361. ISSN 0108-7673

Sarode, P. R. ; Ramasesha, S. ; Madhusudan, W. H. ; Rao, C. N. R. (1979) Relation between effective atomic charge and chemical shifts in X-ray absorption spectra of transition-metal compounds Journal of Physics C: Solid State Physics, 12 (12). pp. 2439-2445. ISSN 0022-3719

Ramasesha, S. ; Ramakrishnan, T. V. ; Rao, C. N. R. (1979) Models for spin-state transitions in solids Journal of Physics C: Solid State Physics, 12 (7). pp. 1307-1317. ISSN 0022-3719

Ramasesha, S. (1979) Monte Carlo simulation of model spin systems Sadhana (Academy Proceedings in Engineering Sciences), 2 (1). pp. 29-48. ISSN 0256-2499

Ramasesha, S. (1978) Monte Carlo simulation of Ising chains showing several phase transitions Journal of Physics C: Solid State Physics, 11 (21). pp. 4355-4362. ISSN 0022-3719

Pati, Swapan K. ; Ramasesha, S. ; Sen, Diptiman (1977) A density matrix renormalization group study of low-energy excitations and low-temperature properties of alternating spin systems Journal of Physics: Condensed Matter, 9 (41). pp. 8707-8726. ISSN 0953-8984

Ramasesha, S. ; Rao, C. N. R. (1977) Monte Carlo simulation of polytypes Philosophical Magazine, 36 (4). pp. 827-833. ISSN 1478-6435

Rao, C. N. R. ; Gai, P. L. ; Ramasesha, S. (1976) Diffuse electron scattering and vacancy ordering in VO Possible role of charge density waves Philosophical Magazine, 33 (2). pp. 387-392. ISSN 1478-6435