Time-reversal symmetry breaking in a square lattice

被引：1
|
作者：
Jimenez, Kevin [1 ]
Reslen, Jose [1 ]
机构：
[1] Univ Atlantico, Coordinac Fis, Carrera 30 Numero 8-49, Puerto Colombia, Colombia
来源：
JOURNAL OF PHYSICS COMMUNICATIONS | 2021年 / 5卷 / 04期
关键词：
time-reversal symmetry breaking; topological insulators; anomalous quantum hall effect;
D O I：
10.1088/2399-6528/abf024
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
The bulk conductivity of a two-dimensional system is studied assuming that time-reversal symmetry is broken by internal mechanisms. The study is carried out by direct diagonalization in order to explore the nonlinear-response provoked by the inclusion of an electric field in the system's Hamiltonian. The system displays a quantized conductivity that depends on the intensity of the field and under specific conditions the conductivity limit at zero electric field displays a nonvanishing value.
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页数：8
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