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Title: Weak-antilocalization and surface dominated transport in topological insulator Bi{sub 2}Se{sub 2}Te

We explore the phase coherence of thin films of the topological insulator material Bi{sub 2}Se{sub 2}Te grown through pulsed laser deposition (PLD) technique. The films were characterised using various techniques for phase and composition. The films were found to be of good quality. We carried out extensive magneto-transport studies of these films and found that they exhibit two dimensional weak antilocalization behaviour. A careful analysis revealed a relatively high phase coherence length (58nm at 1.78K) for a PLD grown film. Since PLD is an inexpensive technique, with the possibility to integrate with other materials, one can make devices which can be extremely useful for low power spintronics and topological quantum computation.
Authors:
; ;  [1] ;  [2]
  1. Indian Institute of Science Education Research Kolkata Mohanpur- 741246 (India)
  2. Indian Institute of Technology Roorkee, Roorkee-247667 (India)
Publication Date:
OSTI Identifier:
22488530
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Advances; Journal Volume: 5; Journal Issue: 4; Other Information: (c) 2015 Author(s); Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; COHERENCE LENGTH; ENERGY BEAM DEPOSITION; LASER RADIATION; PULSED IRRADIATION; QUANTUM COMPUTERS; SURFACES; THIN FILMS