Quantum Oscillations in Magnetothermopower Measurements of the Topological Insulator   Bi 2 Te 3

Author(s): Qu, Dong-Xia; Hor, Yew San; Cava, Robert Joseph

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Abstract:	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. © 2012 American Physical Society.
Publication Date:	Dec-2012
Electronic Publication Date:	10-Dec-2012
Citation:	Qu, Dong-Xia, Hor, Y.S., Cava, R.J. (2012). Quantum Oscillations in Magnetothermopower Measurements of the Topological Insulator. Physical Review Letters, 109 (24), 10.1103/PhysRevLett.109.246602
DOI:	doi:10.1103/PhysRevLett.109.246602
ISSN:	0031-9007
EISSN:	1079-7114
Pages:	109.24:246602-1 - 246602-5
Type of Material:	Journal Article
Journal/Proceeding Title:	Physical Review Letters
Version:	Final published version. Article is made available in OAR by the publisher's permission or policy.
Notes:	Physical Review Letters. Volume 109, Issue 24, 10 December 2012, Article number 246602.