Fermi surface interconnectivity and topology in Weyl fermion semimetals TaAs, TaP, NbAs, and NbP

Chi Cheng Lee, Su Yang Xu, Shin Ming Huang, Daniel S. Sanchez, Ilya Belopolski, Guoqing Chang, Guang Bian, Nasser Alidoust, Hao Zheng, Madhab Neupane, Baokai Wang, Arun Bansil, M. Zahid Hasan, Hsin Lin

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Abstract

The family of binary compounds including TaAs, TaP, NbAs, and NbP was recently discovered as the first realization of Weyl semimetals. In order to develop a comprehensive description of the charge carriers in these Weyl semimetals, we performed detailed and systematic electronic band structure calculations which reveal the nature of Fermi surfaces and their complex interconnectivity in TaAs, TaP, NbAs, and NbP. Our work reports a comparative and comprehensive study of Fermi surface topology and band structure details of all known members of the Weyl semimetal family and hence provides the fundamental knowledge for realizing the many predicted exotic topological quantum physics of Weyl semimetals based on the TaAs class of materials.

Original languageEnglish (US)
Article number235104
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume92
Issue number23
DOIs
StatePublished - Dec 1 2015

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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    Lee, C. C., Xu, S. Y., Huang, S. M., Sanchez, D. S., Belopolski, I., Chang, G., Bian, G., Alidoust, N., Zheng, H., Neupane, M., Wang, B., Bansil, A., Hasan, M. Z., & Lin, H. (2015). Fermi surface interconnectivity and topology in Weyl fermion semimetals TaAs, TaP, NbAs, and NbP. Physical Review B - Condensed Matter and Materials Physics, 92(23), [235104]. https://doi.org/10.1103/PhysRevB.92.235104