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Van Hove singularity and ferromagnetic instability in phosphorene
A. Ziletti, S. M. Huang, D. F. Coker +1
Using Wannier function-based interpolation techniques, we present compelling numerical evidence for the presence of a saddle-point van Hove singularity at the point near the ph…
Observation of a bulk 3D Dirac multiplet, Lifshitz transition, and nestled spin states in Na3Bi
Su-Yang Xu, Chang Liu, S. K. Kushwaha +20
Symmetry or topology protected Dirac fermion states in two and three dimensions constitute novel quantum systems that exhibit exotic physical phenomena. However, none of the studie…
Oscillatory surface dichroism of an insulating topological insulator Bi2Te2Se
M. Neupane, S. Basak, N. Alidoust +16
Using circular dichroism-angle resolved photoemission spectroscopy (CD-ARPES), we report a study of the effect of angular momentum transfer between polarized photons and topologica…
Tunneling Tuned Spin Modulations in Ultrathin Topological Insulator Films
M. Neupane, A. Richardella, J. Sanchez-Barriga +18
Quantitative understanding of the relationship between quantum tunneling and Fermi surface spin polarization is key to device design using topological insulator surface states. By…
Topological electronic structure and Weyl semimetal in the TlBiSe class of semiconductors
Bahadur Singh, Ashutosh Sharma, H. Lin +3
We present an analysis of bulk and surface electronic structures of thallium based ternary III-V-VI series of compounds TlMQ, where M=Bi or Sb and Q=S, Se or Te, using the…
Topological insulators in the quaternary chalcogenide compounds and ternary famatinite compounds
Y. J. Wang, H. Lin, Tanmoy Das +2
We present first-principles calculations to predict several three dimensional (3D) topological insulators in quaternary chalcogenide compounds which are made of I-II-IV-VI…