Quantum Oscillations in Magnetothermopower Measurements of the Topological Insulator Bi₂Te₃
We report the magnetothermopower measurements of the nonmetallic topological insulator Bi2Te3 in magnetic fields up to 35 T. Quantum oscillations arising from surface states are observed in both thermoelectric and conductivity tensors. The inferred surface thermopower has a peak magnitude ~1mV/K possibly as a result of surface electron and bulk phonon interaction. At the n=1 Landau level, we resolve additional quantum oscillations signaling Landau sublevels.
D. Qu et al., "Quantum Oscillations in Magnetothermopower Measurements of the Topological Insulator Bi₂Te₃," Physical Review Letters, vol. 109, no. 24, American Physical Society (APS), Dec 2012.
The definitive version is available at https://doi.org/10.1103/PhysRevLett.109.246602
Keywords and Phrases
Conductivity Tensors; Landau Levels; Magneto-thermopower; Phonon Interactions; Quantum Oscillations; Surface Electron; Topological Insulators; Atomic Physics; Physics; Electric Insulators
International Standard Serial Number (ISSN)
Article - Journal
© 2012 American Physical Society (APS), All rights reserved.
01 Dec 2012