560 citations · 4.5k across the 85 of their papers we have counts for
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Topological quantum properties of chiral crystals
Guoqing Chang, Benjamin J. Wieder, Frank Schindler +10
Chiral crystals are materials whose lattice structure has a well-defined handedness due to the lack of inversion, mirror, or other roto-inversion symmetries. These crystals represe…
Electric-field tunable Dirac semimetal state in phosphorene thin films
Barun Ghosh, Bahadur Singh, R. Prasad +1
We study the electric-field tunable electronic properties of phosphorene thin films, using the framework of density functional theory. We show that phosphorene thin films offer a v…
Theoretical prediction of magnetic and noncentrosymmetric Weyl fermion semimetal states in the R-Al-X family of compounds (R=rare earth, Al=aluminium, X=Si, Ge)
Guoqing Chang, Bahadur Singh, Su-Yang Xu +18
Weyl semimetals are novel topological conductors that host Weyl fermions as emergent quasiparticles. While the Weyl fermions in high-energy physics are strictly defined as the mass…
Discovery of Lorentz-violating Weyl fermion semimetal state in LaAlGe materials
Su-Yang Xu, Nasser Alidoust, Guoqing Chang +18
We report theoretical and experimental discovery of Lorentz-violating Weyl fermion semimetal type-II state in the LaAlGe class of materials. Previously type-II Weyl state was predi…
Room-temperature magnetic topological semimetal state in half-metallic Heusler CoTiX (X=Si, Ge, or Sn)
Guoqing Chang, Su-Yang Xu, Hao Zheng +8
Topological semimetals (TSMs) including Weyl semimetals and nodal-line semimetals are expected to open the next frontier of condensed matter and materials science. Although the fir…
Role of surface termination in realizing well-isolated topological surface states within the bulk band gap in TlBiSe and TlBiTe
Bahadur Singh, Hsin Lin, R. Prasad +1
Electronic structures associated with the flat (polar) Se/Te- or Tl-terminated surfaces of TlBiSe and TlBiTe are predicted to harbor not only Dirac cone states, but also tr…