294 citations · 1.3k across the 17 of their papers we have counts for
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physics.optics2018★ 180 cited
Exceptional Surfaces in PT-Symmetric Photonic Systems
Hengyun Zhou, Jong Yeon Lee, Shang Liu +1
Exceptional points in non-Hermitian systems have recently been shown to possess nontrivial topological properties, and to give rise to many exotic physical phenomena. However, most…
cond-mat.mes-hall2018★ 75 cited
Shift insulators: rotation-protected two-dimensional topological crystalline insulators
Shang Liu, Ashvin Vishwanath, Eslam Khalaf
We study a two-dimensional (2D) tight-binding model of a topological crystalline insulator (TCI) protected by rotation symmetry. The model is built by stacking two Chern insulators…