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Title: Experimental study of the valence band of Bi 2 Se 3

Journal Article · · Physical Review. B, Condensed Matter and Materials Physics
 [1];  [1];  [2];  [3];  [4]
  1. The Ohio State Univ., Columbus, OH (United States). Dept of Mechanical and Aerospace Engineering
  2. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Materials Science and Technology Division
  3. Gentherm, Inc., Azusa, CA (United States)
  4. The Ohio State Univ., Columbus, OH (United States). Dept of Mechanical and Aerospace Engineering; The Ohio State Univ., Columbus, OH (United States). Dept of Physics

The valence band of Bi2Se3 is investigated with Shubnikov - de Haas measurements, galvanomagnetic and thermoelectric transport. At low hole concentration, the hole Fermi surface is closed and box-like, but at higher concentrations it develops tube-like extensions that are open. The experimentally determined density-of-states effective mass is lighter than density-functional theory calculations predict; while we cannot give a definitive explanation for this, we suspect that the theory may lack sufficient precision to compute room-temperature transport properties, such as the Seebeck coefficient, in solids in which there are Van der Waals interlayer bonds.

Research Organization:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
AC05-00OR22725; CBET-1048622
OSTI ID:
1185394
Alternate ID(s):
OSTI ID: 1179946
Journal Information:
Physical Review. B, Condensed Matter and Materials Physics, Vol. 90, Issue 12; ISSN 1098-0121
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 13 works
Citation information provided by
Web of Science

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Cited By (5)

Complex Band Structures and Lattice Dynamics of Bi 2 Te 3 ‐Based Compounds and Solid Solutions journal April 2019
Tetradymites as thermoelectrics and topological insulators journal September 2017
Two-band model interpretation of the p - to n -transition in ternary tetradymite topological insulators journal August 2015
Optical properties of Bi 2 Se 3 : from bulk to ultrathin films journal November 2016
Two Band Model Interpretation of the p to n Transition in Ternary Tetradymite Topological Insulators preprint January 2015