2021
DOI: 10.48550/arxiv.2110.09623
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Bulk Rashba spin splitting and Dirac surface state in $p$-type (Bi$_{0.9}$Sb$_{0.1})_2$Se$_3$ single crystal

P. K. Ghose,
S. Bandyopadhyay,
T. K. Dalui
et al.

Abstract: We report bulk Rashba spin splitting (RSS) and associated Dirac surface state in (Bi0.9Sb0.1)2Se3, exhibiting dominant p-type conductivity. We argue from the synchrotron diffraction studies that origin of the bulk RSS is due to a structural transition to a noncentrosymmetric R3m phase below ∼ 30 K. The Shubnikov-de Haas Van (SdH) oscillations observed in the magnetoresistance curves at low temperature and the Landau level fan diagram, as obtained from these oscillations, confirm the presence of nontrivial Dira… Show more

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