Surface dominated magnetotransport in Bi2 Te2.15 Se 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
Indian Institute of Technology
Aligarh Muslim University
André Dankert
Chalmers, Microtechnology and Nanoscience (MC2), Quantum Device Physics
Priyamvada Bhasker
Student at Chalmers
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 5051478Subject Categories
Inorganic Chemistry
Materials Chemistry
Condensed Matter Physics
DOI
10.1063/1.5051478