Bose, I. I., Mitra, P. (July 1991) Frustrated spin-1/2 model in two dimensions with a known ground state. Physical Review. B, Condensed Matter, 44 (1). pp. 443-445. ISSN 0163-1829 (Print)0163-1829
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: | Paper |
|---|---|
| Subjects: | physics |
| CSHL Authors: | |
| Communities: | CSHL labs > Mitra lab |
| Depositing User: | Matt Covey |
| Date: | 1 July 1991 |
| Date Deposited: | 21 Apr 2014 18:40 |
| Last Modified: | 10 Feb 2017 20:52 |
| Related URLs: | |
| URI: | https://repository.cshl.edu/id/eprint/29776 |
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