189 citations · 819 across the 15 of their papers we have counts for
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Higher-order topological insulators and semimetals in generalized Aubry-André-Harper models
Qi-Bo Zeng, Yan-Bin Yang, Yong Xu
Higher-order topological phases of matter have been extensively studied in various areas of physics. While the Aubry-André-Harper model provides a paradigmatic example to study top…
Topological Insulators beyond Energy Band Characterization
Yan-Bin Yang, Kai Li, Yong Xu
Topological phases of matter are generally characterized by topological properties of energy bands of a system. Their transitions under preserved symmetries occur through closing a…
Type-II quadrupole topological insulators
Yan-Bin Yang, Kai Li, L. -M. Duan +1
Modern theory of electric polarization is formulated by the Berry phase, which, when quantized, leads to topological phases of matter. Such a formulation has recently been extended…
Topological Phases in Non-Hermitian Aubry-André-Harper Models
Qi-Bo Zeng, Yan-Bin Yang, Yong Xu
Topological phases have recently witnessed a rapid progress in non-Hermitian systems. Here we study a one-dimensional non-Hermitian Aubry-André-Harper model with imaginary periodic…