203 citations · 504 across the 19 of their papers we have counts for
19 papers
Hidden-symmetry-protected Z_2 topological insulator in a cubic lattice
Jing-Min Hou, Wei Chen
Usually topological insulators are protected by time reversal symmetry. Here, we present a new type of topological insulators in a cubic lattice which is protected by a…
Hidden antiunitary symmetry behind "accidental" degeneracy and its protection of degeneracy
Jing-Min Hou, Wei Chen
In quantum mechanics, accidental degeneracy refers to energy degeneracy that occurs coincidentally, without any protection by symmetry. Here, we prove a theorem stating that any tw…
Topological semimetals with double-helix nodal link
Wei Chen, Hai-Zhou Lu, Jing-Min Hou
Topological nodal line semimetals are characterized by the crossing of the conduction and valence bands along one or more closed loops in the Brillouin zone. Usually, these loops a…
Hidden-symmetry-protected quantum pseudo-spin Hall effect in optical lattices
Jing-Min Hou, Wei Chen
We propose a scheme to realize a new Z_2 topological insulator in a square optical lattice. Different from the conventional topological insulator protected by the time-reversal sym…
Spin Berry Phase in a Quantum-Spin-Hall-Insulator-Based Interferometer: Evidence for the Helical Spin Texture of the Edge States
Wei Chen, Wei-Yin Deng, Jing-Min Hou +3
Quantum spin Hall insulator is characterized by the helical edge states, with the spin polarization of electron being locked to its direction of motion. Although the edge-state con…
Weyl semimetals in optical lattices: moving and merging of Weyl points, and hidden symmetry at Weyl points
Jing-Min Hou, Wei Chen
We propose to realize Weyl semimetals in a cubic optical lattice. We find that there exist three distinct Weyl semimetal phases in the cubic optical lattice for different parameter…