Anyonic Liquids in Nearly Saturated Spin Chains
Strongly Correlated Electrons
2015-01-05 v2
Abstract
Most Heisenberg-like spin chains flow to a universal free-fermion fixed point near the magnetic-field induced saturation point. Here we show that an exotic fixed point, characterized by two species of low-energy excitations with mutual anyonic statistics, may also emerge in such spin chains if the dispersion relation has two minima. By using bosonization, two-magnon exact calculations, and numerical density-matrix-renormalization-group, we demonstrate the existence of this anyonic-liquid fixed point in an XXZ spin chain with up to second neighbor interactions. We also identify a range of microscopic parameters, which support this phase.
Keywords
Cite
@article{arxiv.1408.5151,
title = {Anyonic Liquids in Nearly Saturated Spin Chains},
author = {Armin Rahmani and Adrian E. Feiguin and Cristian D. Batista},
journal= {arXiv preprint arXiv:1408.5151},
year = {2015}
}
Comments
5 pages, 3 figures, 3 pages of supplemental material (to appear in PRL)