Bose, I. (1990) Two-dimensional spin models with resonating valence bond ground states Journal of Physics: Condensed Matter, 2 (24). pp. 5479-5482. ISSN 0953-8984
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Official URL: http://iopscience.iop.org/0953-8984/2/24/018
Related URL: http://dx.doi.org/10.1088/0953-8984/2/24/018
Abstract
Two spin models in two dimensions are constructed for which the exact ground states can be written down in a certain parameter regime of the Hamiltonian. The ground state of the first model is a local resonating valence bond (RVB) state in which not all the spins participate in resonance. The ground state is highly degenerate and there is a gap in the excitation spectrum. The second model is shown to have a ground state which is a quantum spin liquid with all the spins taking part in resonance. The ground state obtained is non-degenerate and there is no gap in the excitation spectrum.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to Institute of Physics Publishing. |
| ID Code: | 5999 |
| Deposited On: | 19 Oct 2010 09:54 |
| Last Modified: | 23 May 2011 05:16 |
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