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, T and T. We also measured the infrared optical reflectance 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 and the effective masses for the inner and for the outer sheet. Surprisingly, despite its low effective mass, we found that the amplitude of is very rapidly suppressed with increasing temperature, being almost undetectable above K.
- Received 25 July 2014
- Revised 30 October 2014
DOI:https://doi.org/10.1103/PhysRevB.90.201204
©2014 American Physical Society