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
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Official URL: http://linkinghub.elsevier.com/retrieve/pii/S03796...
Related URL: http://dx.doi.org/10.1016/S0379-6779(97)80136-1
Abstract
A symmetrized Density Matrix Renormalization Group procedure together with the correction vector approach is shown to be highly accurate for obtaining dynamic linear and third order polarizabilities of one-dimensional Hubbard and U - V models. The U - V model is seen to show characteristically different third harmonic generation response in the CDW and SDW phases. This can be rationalized from the excitation spectrum of the systems.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to Elsevier Science. |
| Keywords: | Semiempirical Models and Model Calculations; Many-body and Quasiparticle Theories; Excitation Spectra Calculations; Models of Non-linear Phenomena; Non-linear Optical Method |
| ID Code: | 17688 |
| Deposited On: | 16 Nov 2010 12:51 |
| Last Modified: | 17 May 2016 02:17 |
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