Observation of Landau quantization and standing waves in HfSiS

L. Jiao, Q. N. Xu, Y. P. Qi, S.-C. Wu, Y. Sun, C. Felser, and S. Wirth
Phys. Rev. B 97, 195137 – Published 21 May 2018

Abstract

Recently, HfSiS was found to be a new type of Dirac semimetal with a line of Dirac nodes in the band structure. Meanwhile, Rashba-split surface states are also pronounced in this compound. Here we report a systematic study of HfSiS by scanning tunneling microscopy/spectroscopy at low temperature and high magnetic field. The Rashba-split surface states are characterized by measuring Landau quantization and standing waves, which reveal a quasilinear dispersive band structure. First-principles calculations based on density-functional theory are conducted and compared with the experimental results. Based on these investigations, the properties of the Rashba-split surface states and their interplay with defects and collective modes are discussed.

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  • Received 17 April 2018

DOI:https://doi.org/10.1103/PhysRevB.97.195137

©2018 American Physical Society

Physics Subject Headings (PhySH)

Condensed Matter, Materials & Applied Physics

Authors & Affiliations

L. Jiao1, Q. N. Xu1, Y. P. Qi1,2, S.-C. Wu1, Y. Sun1, C. Felser1, and S. Wirth1,*

  • 1Max-Planck-Institute for Chemical Physics of Solids, Nöthnitzer Strasse 40, 01187 Dresden, Germany
  • 2School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, China

  • *Steffen.Wirth@cpfs.mpg.de

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Vol. 97, Iss. 19 — 15 May 2018

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