Edge states of Spin-1/2 Two-Leg Ladder with Four-Spin Ring Exchange
Strongly Correlated Electrons
2009-05-12 v3
Abstract
A topological insulator and its spin analogue as a gapped spin liquid have characteristic low energy excitations (edge states) within the gap when the systems have boundaries. This is the bulk-edge correspondence, which implies that the edge states themselves characterize the gapped bulk spin liquid. Based on the general principle, we analyzed the vector chirality phase of the spin-1/2 ladder with ring exchange by using the edge states and the entanglement entropy.
Keywords
Cite
@article{arxiv.0812.3445,
title = {Edge states of Spin-1/2 Two-Leg Ladder with Four-Spin Ring Exchange},
author = {Mitsuhiro Arikawa and Shou Tanaya and Isao Maruyama and Yasuhiro Hatsugai},
journal= {arXiv preprint arXiv:0812.3445},
year = {2009}
}
Comments
6 pages, 10 figures