Chiral order in spin-S XY chains

Details Chiral order in spin-S XY chains Chiral order in spin-S XY chains

2002-04-07

arxiv.org/abs/cond-mat/0204160v1

Prog. Theor. Phys. Suppl. 145, 23 (2002).

Physics

Condensed Matter

Strongly Correlated Electrons

6 pages, proceedings of the YITP workshop, Kyoto, Japan, Nov. 2001

Scientific paper

We consider the issue of chiral ordering in spin chains for an arbitrary value of the spins S. By use of bosonization according to a scheme developped by H.-J. Schulz, we obtain the phase diagram of the chain with XY exchange between nearest and next-to-nearest neighbors. We obtain a satisfactory picture including a chiral spin nematic phase which is gapless, has long-range chiral order and incommensurate spin correlations. We perform a stability analysis of this phase and point out that this analysis is in conflict with existing DMRG results that shows a difference between integer and half-integer spin case.

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