Band splitting in Cd3As2 measured by magnetotransport

W. Desrat, S. S. Krishtopenko, B. A. Piot, M. Orlita, C. Consejo, S. Ruffenach, W. Knap, A. Nateprov, E. Arushanov, and F. Teppe
Phys. Rev. B 97, 245203 – Published 12 June 2018
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Abstract

Magnetotransport measurements have been performed on (112)-oriented bulk Cd3As2 samples with in situ rotation at low temperature. The frequency analysis of the Shubnikov–de Haas oscillations reveals two weakly separated frequencies arising from two Fermi ellipsoids. The angle dependence of these frequencies is fitted by an analytical expression that we derived for any magnetic field orientation. It is based on an 8×8 k·p model which includes the spin-orbit coupling, the crystal field splitting due to tetragonal distortion, and the additional band splitting occurring in noncentrosymmetric crystals. This band splitting is evaluated to a finite value of 30 meV, demonstrating the absence of inversion symmetry in our Cd3As2 crystal.

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  • Received 9 March 2018
  • Revised 23 May 2018

DOI:https://doi.org/10.1103/PhysRevB.97.245203

©2018 American Physical Society

Physics Subject Headings (PhySH)

Condensed Matter, Materials & Applied Physics

Authors & Affiliations

W. Desrat1, S. S. Krishtopenko1,2, B. A. Piot3, M. Orlita3, C. Consejo1, S. Ruffenach1, W. Knap1, A. Nateprov4, E. Arushanov4, and F. Teppe1

  • 1Laboratoire Charles Coulomb (L2C), Université de Montpellier, CNRS, Montpellier FR-34095, France
  • 2Institute for Physics of Microstructures RAS, GSP-105, 603950 Nizhni Novgorod, Russia
  • 3LNCMI, CNRS-UGA-UPS-INSA-EMFL, F-38042 Grenoble, France
  • 4Institute of Applied Physics, Academy of Sciences of Moldova, MD-2028 Chisinau, Moldova

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Issue

Vol. 97, Iss. 24 — 15 June 2018

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