Open AccessTopological phase transitions in core-shell gyromagnetic photonic crystal
Author(s) -
Shen Qing-Wei,
Lin Xu,
Jianhua Jiang
Publication year - 2017
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.66.224102
Subject(s) - physics , topological insulator , condensed matter physics , quantum phase transition , hexagonal lattice , quantum phases , topology (electrical circuits) , topological order , symmetry (geometry) , phase transition , quantum , quantum mechanics , geometry , mathematics , combinatorics , antiferromagnetism
We found that core-shell gyromagnetic photonic crystal of two-dimensional triangular lattice exhibit topological phases. In a certain parameters and magnetic field, those phases could be a conventional insulator phase, a quantum spin Hall phase, and a quantum anomalous Hall phase. Different from the structure of Ref[1], phase transitions in our core-shell structure does not involve changes of space symmetry, which depend on parameters of our structure and the broken of time reverse symmetry. Our result shows the variety of topological phase transitions in photonic crystals.