Abstract
We present a new class of exactly solvable spin models. The solutions involve broken translational symmetry, in contrast to the Haldane gap, and constitute a new type of ground state for a spin-one chain. The models have ground states with precipitously short-range spin correlations and exhibit gaps to solitonic spin excitations. We construct a solvable model for each value of the total spin of the underlying atoms, with the solution corresponding to the natural generalization to the Majumdar-Ghosh state, of 'dimer' pairing, to larger spin magnitudes.
Original language | English |
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Pages (from-to) | 5811-5828 |
Number of pages | 18 |
Journal | Journal of Physics: Condensed Matter |
Volume | 5 |
Issue number | 32 |
DOIs | |
Publication status | Published - 9 Aug 1993 |