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An optical investigation of the strong spin-orbital coupled magnetic semimetal YbMnBi
Dipanjan Chaudhuri, Bing Cheng, Alexander Yaresko +3
Strong spin-orbit coupling (SOC) can result in ground states with non-trivial topological properties. The situation is even richer in magnetic systems where the magnetic ordering c…
Pressuring the low-temperature orthorhombic phase with a non-trivial topological state of Ru2Sn3 to room temperature
Shan Zhang, Q. D. Gibson, Wei Yi +11
We report high pressure studies of the structural stability of Ru2Sn3, a new type of three dimensional topological insulator (3D-TI) with unique quasi-one dimensional Dirac electro…
A pressure-induced topological phase with large Berry curvature in PbSnTe
Tian Liang, Satya Kushwaha, Jinwoong Kim +5
The picture of how a gap closes in a semiconductor has been radically transformed by topological concepts. Instead of the gap closing and immediately re-opening, topological argume…
3D Dirac cone carrier dynamics in Na3Bi and Cd3As2
G. S. Jenkins, C. Lane, B. Barbiellini +12
Optical measurements and band structure calculations are reported on 3D Dirac materials. The electronic properties associated with the Dirac cone are identified in the reflectivity…
The chiral anomaly and thermopower of Weyl fermions in the half-Heusler GdPtBi
Max Hirschberger, Satya Kushwaha, Zhijun Wang +5
The Dirac and Weyl semimetals are unusual materials in which the nodes of the bulk states are protected against gap formation by crystalline symmetry. The chiral anomaly~\cite{Adle…
Gapped Surface States in a Strong-Topological-Semimetal
A. P. Weber, Q. D. Gibson, Huiwen Ji +4
A three-dimensional strong-topological-insulator or -semimetal hosts topological surface states which are often said to be gapless so long as time-reversal symmetry is preserved. T…