Weak-antilocalization and surface dominated transport in topological insulator Bi2Se2Te | Zendy

Radha Krishna Gopal | Zendy; Sourabh Singh | Zendy; Ramesh Chandra | Zendy; Chiranjib Mitra | Zendy

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Weak-antilocalization and surface dominated transport in topological insulator Bi2Se2Te

Author(s) -

Radha Krishna Gopal,

Sourabh Singh,

Ramesh Chandra,

Chiranjib Mitra

Publication year - 2015

Publication title -

aip advances

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.421

H-Index - 58

ISSN - 2158-3226

DOI - 10.1063/1.4917455

Subject(s) - topological insulator , phase coherence , spintronics , pulsed laser deposition , thin film , materials science , condensed matter physics , weak localization , insulator (electricity) , coherence length , coherence (philosophical gambling strategy) , topology (electrical circuits) , optoelectronics , nanotechnology , physics , magnetoresistance , ferromagnetism , magnetic field , superconductivity , quantum mechanics , mathematics , combinatorics

We explore the phase coherence of thin films of the topological insulator material Bi2Se2Te 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

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