Surface dominated magnetotransport in Bi2 Te2.15 Se 0.85 topological insulator
Artikel i vetenskaplig tidskrift, 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.
Författare
Bushra Irfan
Indian Institute of Technology
Aligarh Muslim University
André Dankert
Chalmers, Mikroteknologi och nanovetenskap, Kvantkomponentfysik
Priyamvada Bhasker
Student vid Chalmers
Dmitrii Khokhriakov
Chalmers, Mikroteknologi och nanovetenskap, Kvantkomponentfysik
Saroj Prasad Dash
Chalmers, Mikroteknologi och nanovetenskap, Kvantkomponentfysik
Ratnamala Chatterjee
Indian Institute of Technology
Journal of Applied Physics
0021-8979 (ISSN) 1089-7550 (eISSN)
Vol. 124 21 5051478Ämneskategorier
Oorganisk kemi
Materialkemi
Den kondenserade materiens fysik
DOI
10.1063/1.5051478