Quantum phase transitions of a generalized compass chain with staggered Dzyaloshinskii-Moriya interaction
Strongly Correlated Electrons
2017-06-01 v1
Abstract
We consider a class of one-dimensional compass models with staggered Dzyaloshinskii-Moriya exchange interactions in an external transverse magnetic field. Based on the exact solution derived from Jordan-Wigner approach, we study the excitation gap, energy spectra, spin correlations and critical properties at phase transitions. We explore mutual effects of the staggered Dzyaloshinskii-Moriya interaction and the magnetic field on the energy spectra and the ground-state phase diagram. Thermodynamic quantities including the entropy and the specific heat are discussed, and their universal scalings at low temperature are demonstrated.
Keywords
Cite
@article{arxiv.1705.10937,
title = {Quantum phase transitions of a generalized compass chain with staggered Dzyaloshinskii-Moriya interaction},
author = {Qing-Qiu Wu and Wei-Hai Ni and Wen-Long You},
journal= {arXiv preprint arXiv:1705.10937},
year = {2017}
}
Comments
8 page, 10 figures