Topological Order Parameters for Interacting Topological Insulators
Strongly Correlated Electrons
2018-10-24 v2 Mesoscale and Nanoscale Physics
Materials Science
Abstract
We propose a topological order parameter for interacting topological insulators, expressed in terms of the full Green's functions of the interacting system. We show that it is exactly quantized for a time reversal invariant topological insulator, and it can be experimentally measured through the topological magneto-electric effect. This topological order parameter can be applied to both interacting and disordered systems, and used for determining their phase diagrams.
Cite
@article{arxiv.1004.4229,
title = {Topological Order Parameters for Interacting Topological Insulators},
author = {Zhong Wang and Xiao-Liang Qi and Shou-Cheng Zhang},
journal= {arXiv preprint arXiv:1004.4229},
year = {2018}
}
Comments
4 pages, 2 figures. Published version