Weak-antilocalization and surface dominated transport in topological insulator Bi2Se2Te

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 mag...

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Main Authors: Radha Krishna Gopal, Sourabh Singh, Ramesh Chandra, Chiranjib Mitra
Format: Article
Language:English
Published: AIP Publishing LLC 2015-04-01
Series:AIP Advances
Online Access:http://dx.doi.org/10.1063/1.4917455
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author Radha Krishna Gopal
Sourabh Singh
Ramesh Chandra
Chiranjib Mitra
author_facet Radha Krishna Gopal
Sourabh Singh
Ramesh Chandra
Chiranjib Mitra
author_sort Radha Krishna Gopal
collection DOAJ
description 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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spelling doaj.art-bdd559fe4c6a49198f042b2b65cec7032022-12-21T20:01:52ZengAIP Publishing LLCAIP Advances2158-32262015-04-0154047111047111-1010.1063/1.4917455011504ADVWeak-antilocalization and surface dominated transport in topological insulator Bi2Se2TeRadha Krishna Gopal0Sourabh Singh1Ramesh Chandra2Chiranjib Mitra3Indian Institute of Science Education Research Kolkata Mohanpur- 741246, IndiaIndian Institute of Science Education Research Kolkata Mohanpur- 741246, IndiaIndian Institute of Technology Roorkee, Roorkee-247667, IndiaIndian Institute of Science Education Research Kolkata Mohanpur- 741246, IndiaWe 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.http://dx.doi.org/10.1063/1.4917455
spellingShingle Radha Krishna Gopal
Sourabh Singh
Ramesh Chandra
Chiranjib Mitra
Weak-antilocalization and surface dominated transport in topological insulator Bi2Se2Te
AIP Advances
title Weak-antilocalization and surface dominated transport in topological insulator Bi2Se2Te
title_full Weak-antilocalization and surface dominated transport in topological insulator Bi2Se2Te
title_fullStr Weak-antilocalization and surface dominated transport in topological insulator Bi2Se2Te
title_full_unstemmed Weak-antilocalization and surface dominated transport in topological insulator Bi2Se2Te
title_short Weak-antilocalization and surface dominated transport in topological insulator Bi2Se2Te
title_sort weak antilocalization and surface dominated transport in topological insulator bi2se2te
url http://dx.doi.org/10.1063/1.4917455
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AT rameshchandra weakantilocalizationandsurfacedominatedtransportintopologicalinsulatorbi2se2te
AT chiranjibmitra weakantilocalizationandsurfacedominatedtransportintopologicalinsulatorbi2se2te