Bose, Indrani ; Mitra, Partha (1991) Frustrated spin-1/2 model in two dimensions with a known ground state Physical Review B, 44 (1). pp. 443-445. ISSN 0163-1829
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Official URL: http://prb.aps.org/abstract/PRB/v44/i1/p443_1
Related URL: http://dx.doi.org/10.1103/PhysRevB.44.443
Abstract
A frustrated spin-1/2 model is constructed on the square lattice, the Hamiltonian of which contains five types of interactions: nearest-neighbor (NN), diagonal (D), next-nearest-neighbor (NNN), knight's-move-distance away (KM), and further-neighbor diagonal (FND). The NN bonds in a particular direction, horizontal or vertical, are of alternating coupling strengths 7J and J. The other interaction strengths are: J (for NN and D), (J), J/2 (for NNN and KM), and J/4 (for FND). We prove that the exact ground state of the Hamiltonian is the columnar-dimer state.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to American Physical Society. |
| ID Code: | 5941 |
| Deposited On: | 19 Oct 2010 10:07 |
| Last Modified: | 19 Oct 2010 10:07 |
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