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arXiv · 1208.5523

Quantum oscillations and optical conductivity in Rashba spin-splitting BiTeI

C. Martin·E. D. Mun·H. Berger·V. S. Zapf·D. B. Tanner
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Abstract

We report the observation of Shubnikov-de Haas (SdH) oscillations in single crystals of the Rashba spin-splitting compound BiTeI, from both longitudinal ($R_{xx}(B)$) and Hall ($R_{xy}(B)$) magnetoresistance. Under magnetic field up to 65 T, we resolved unambiguously only one frequency $F = 284.3\pm 1.3$ T, corresponding to a Fermi momentum $k_{F} = 0.093\pm 0.002$Å$^{-1}$.The amplitude of oscillations is strongly suppressed by tilting magnetic field, suggesting a highly two-dimensional Fermi surface. Combining with optical spectroscopy, we show that quantum oscillations may be consistent with a bulk conduction band having a Rashba splitting momentum $k_{R}=0.046\pm$Å$^{-1}$.

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C. Martin, E. D. Mun, H. Berger, V. S. Zapf, D. B. Tanner. 2013-05-07. Quantum oscillations and optical conductivity in Rashba spin-splitting BiTeI. https://doi.org/10.1103/physrevb.87.041104

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