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Unusual Shubnikov–de Haas oscillations in BiTeCl

C. Martin, A. V. Suslov, S. Buvaev, A. F. Hebard, P. Bugnon, H. Berger, A. Magrez, and D. B. Tanner
Phys. Rev. B 90, 201204(R) – Published 13 November 2014

Abstract

We report measurements of Shubnikov–de Haas oscillations in single crystals of BiTeCl at magnetic fields up to 31 T and at temperatures as low as 0.4 K. Two oscillation frequencies were resolved at the lowest temperatures, F1=65±4 T and F2=156±5 T. We also measured the infrared optical reflectance R(ω) and Hall effect; we propose that the two frequencies correspond respectively to the inner and outer Fermi sheets of the Rashba spin-split bulk conduction band. The bulk carrier concentration was ne1×1019cm3 and the effective masses m1*=0.20m0 for the inner and m2*=0.27m0 for the outer sheet. Surprisingly, despite its low effective mass, we found that the amplitude of F2 is very rapidly suppressed with increasing temperature, being almost undetectable above T4 K.

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  • Received 25 July 2014
  • Revised 30 October 2014

DOI:https://doi.org/10.1103/PhysRevB.90.201204

©2014 American Physical Society

Authors & Affiliations

C. Martin1, A. V. Suslov2, S. Buvaev3, A. F. Hebard3, P. Bugnon4, H. Berger4, A. Magrez4, and D. B. Tanner3

  • 1Ramapo College of New Jersey, Mahwah, New Jersey 07430, USA
  • 2National High Magnetic Field Laboratory, Tallahassee, Florida 32310, USA
  • 3Department of Physics, University of Florida, Gainesville, Florida 32611, USA
  • 4Institute of Physics of Complex Matter, Ecole Polytechnique Federal de Lausanne, CH-1015 Lausanne, Switzerland

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Issue

Vol. 90, Iss. 20 — 15 November 2014

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