Surface dominated magnetotransport in Bi2Te2.15Se 0.85 topological insulator
Journal article, 2018

Topological insulators (TIs) represent a new state of matter possessing an attractive surface spin texture with possible applications in quantum computation and spintronics. The growth of prototypical TIs such as Bi 2Te 3 and Bi 2Se 3 still remains a major challenge, because of vacancies and defects leading to an unintentional doping of the crystals creating a parallel conduction channel in the bulk. Here, we synthesized the Bi 2Te 2.15Se 0.85 (BTS) TI using a modified Bridgeman technique. Magnetotransport studies at different angles and temperatures of the device made on thin (BTS) flakes reveal the 2D nature of the weak antilocalization signal and surface dominated transport properties at low temperatures.

Author

Bushra Irfan

Aligarh Muslim University

Indian Institute of Technology

André Dankert

Chalmers, Microtechnology and Nanoscience (MC2), Quantum Device Physics

Priyamvada Bhasker

Chalmers, Microtechnology and Nanoscience (MC2)

Dmitrii Khokhriakov

Chalmers, Microtechnology and Nanoscience (MC2), Quantum Device Physics

Saroj Prasad Dash

Chalmers, Microtechnology and Nanoscience (MC2), Quantum Device Physics

Ratnamala Chatterjee

Indian Institute of Technology

Journal of Applied Physics

0021-8979 (ISSN) 1089-7550 (eISSN)

Vol. 124 21 5051478

Subject Categories

Inorganic Chemistry

Materials Chemistry

Condensed Matter Physics

DOI

10.1063/1.5051478

More information

Latest update

7/12/2019