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Weyl Exceptional Rings in a Three-Dimensional Dissipative Cold Atomic Gas
Yong Xu, Sheng-Tao Wang, L. -M. Duan
Three-dimensional topological Weyl semimetals can generally support a zero-dimensional Weyl point characterized by a quantized Chern number or a one-dimensional Weyl nodal ring (or…
Thermoelectric Effects and Topological Insulators
Yong Xu
The recent discovery of topological insulator (TI) offers new opportunities for the development of thermoelectrics, because many TIs (like BiTe) are excellent thermoelectri…
Type-II Weyl Points in Three-Dimensional Cold Atom Optical Lattices
Yong Xu, L. -M. Duan
Topological Lifshitz phase transition characterizes an abrupt change of the topology of the Fermi surface through a continuous deformation of parameters. Recently, Lifshitz transit…
Model for Topological Phononics and Phonon Diode
Yizhou Liu, Yong Xu, Shou-Cheng Zhang +1
The quantum anomalous Hall effect, an exotic topological state first theoretically predicted by Haldane and recently experimentally observed, has attracted enormous interest for lo…
Dirac semimetal phase in the hexagonal LiZnBi
Wendong Cao, Peizhe Tang, Yong Xu +3
Based on first-principles calculations, we find that LiZnBi, a metallic hexagonal compound, can be driven into a Dirac semimetal with a pair of Dirac points by strain. The no…