Quantum Dot Research Centre, National Institute for Materials Science (NIMS), Tsukuba 305-0044, Japan.
J Phys Condens Matter. 2010 Jun 9;22(22):225502. doi: 10.1088/0953-8984/22/22/225502. Epub 2010 May 21.
Topological properties of bulk and edge states in honeycomb lattice photonic crystals are investigated theoretically for transverse-electric (TE) polarization. Breaking of space-inversion and time-reversal symmetries is considered at optical frequencies. The bulk band structure exhibits a topological phase transition by changing the degree of the broken symmetries. The resulting phase diagram correlates with zigzag and armchair edge states, and the so-called bulk-edge correspondence is verified. The effects of flat interfaces near the edges are also discussed.
我们理论上研究了 TE 极化蜂窝状晶格光子晶体的体和边缘态的拓扑性质。在光学频率下，我们考虑了空间反演和时间反演对称性的破坏。通过改变破坏对称性的程度，体带结构表现出拓扑相变。所得的相图与锯齿形和扶手椅边缘态相关联，并验证了所谓的体-边对应关系。我们还讨论了边缘附近平坦界面的影响。
