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Diagnosis for topological semimetals in the absence of spin-orbital coupling
Zhida Song, Tiantian Zhang, Chen Fang
Topological semimetals are under intensive theoretical and experimental studies. The first step of these studies is always the theoretical (numerical) predication of one of several…
Quantitative mappings between symmetry and topology in solids
Zhida Song, Tiantian Zhang, Zhong Fang +1
The study of spatial symmetries was accomplished during the last century, and had greatly improved our understanding of the properties of solids. Nowadays, the symmetry data of any…
-dimensional edge states of rotation symmetry protected topological states
Zhida Song, Zhong Fang, Chen Fang
We study fourfold rotation invariant gapped topological systems with time-reversal symmetry in two and three dimensions (). We show that in both cases nontrivial topology is…
Double-Weyl phonons in transition-metal monosilicides
Tiantian Zhang, Zhida Song, A. Alexandradinata +4
Topological states of electrons and photons have attracted significant interest recently. Topological mechanical states also being actively explored, have been limited to macroscop…
Instability of Dirac semimetal phase under strong magnetic field
Zhida Song, Zhong Fang, Xi Dai
The quantum limit can be easily reached in the Dirac semimetals under the magnetic field, which will lead to some exotic many-body physics due to the high degeneracy of the topolog…