Journal
APPLIED PHYSICS LETTERS
Volume 101, Issue 20, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.4766739
Keywords
bismuth compounds; insulating thin films; magnetoresistance; pulsed laser deposition; spin-orbit interactions; topological insulators
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Funding
- CINT, a U.S. Department of Energy, Office of Basic Energy Sciences [DMR901624]
- National High Magnetic Field Laboratory, a US National Science Foundation [DMR901624]
- Laboratory Directed Research and Development Program at LANL
- U.S. Department of Energy [DE-AC52-06NA25396]
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We report magneto-transport studies of topological insulator Bi2Te3 thin films grown by pulsed laser deposition. A non-saturating linear-like magneto-resistance (MR) is observed at low temperatures in the magnetic field range from a few Tesla up to 60 Tesla. We demonstrate that the strong linear-like MR at high field can be well understood as the weak antilocalization phenomena described by Hikami-Larkin-Nagaoka theory. Our analysis suggests that in our system, a topological insulator, the elastic scattering time can be longer than the spin-orbit scattering time. We briefly discuss our results in the context of Dirac Fermion physics and quantum linear magnetoresistance. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4766739]
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