Quantum oscillations and nontrivial transport in (Bi0.92In0.08)2Se3
Minhao Zhang, Yan Li, Fengqi Song, Xuefeng Wang, Rong Zhang
TL;DR
This study investigates the magnetotransport properties of (Bi0.92In0.08)2Se3, revealing quantum oscillations and nontrivial topological features, indicating its potential for exploring quantum phase transitions in topological insulators.
Contribution
It provides detailed experimental evidence of quantum oscillations and topological Dirac fermions in (Bi0.92In0.08)2Se3, a material relevant for quantum phase transition studies.
Findings
Quantum oscillations observed at about 5 T
High mobility of 1.4×10^4 cm2/Vs at 2 K
Presence of nontrivial Berry phase indicating topological Dirac fermions
Abstract
Quantum phase transition in topological insulators has drawn heightened attention in condensed matter physics and future device applications. Here we report the magnetotransport properties of single crystalline (Bi0.92In0.08)2Se3. The average mobility of about 1000 cm2/Vs is obtained from the Lorentz law at the low field up to 50 K. The quantum oscillations rise at a field of about 5 T, revealing a high mobility of 1.4*10^4 cm2/Vs at 2 K. The topological Dirac fermions are evident by the nontrivial Berry phase in the Landau Fan diagram. The properties make the (Bi0.92In0.08)2Se3 a promising platform for the investigation of quantum phase transition in topological insulators.
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