Topological order parameters for interacting topological insulators |
| |
Authors: | Wang Zhong Qi Xiao-Liang Zhang Shou-Cheng |
| |
Institution: | Department of Modern Physics, University of Science and Technology of China, Hefei, 230026, PR China. |
| |
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. |
| |
Keywords: | |
本文献已被 PubMed 等数据库收录! |
|