关键词: 光子晶体/
拓扑相变/
拓扑边界态
English Abstract
Topological phase transitions in core-shell gyromagnetic photonic crystal
Shen Qing-Wei1,Xu Lin1,
Jiang Jian-Hua1,2
1.Department of Physics, Optoelectronics and Energy, Soochow University, Suzhou 215006, China;
2.Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou 215006, China
Fund Project:Project supported by the National Natural Science Foundation of China (Grant Nos. 11675116) and the Faculty Startup Funding of Soochow University.Received Date:30 August 2017
Accepted Date:08 November 2017
Published Online:05 November 2017
Abstract: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.
Keywords: photonic crystal/
topological phase transition/
topological edge state
