Magnetoresistance of Bi2Se3 Whiskers at Low Temperatures

N.S. Liakh-Kaguy; A.A. Druzhinin; I.P. Ostrovskii; Yu.N. Khoverko

doi:10.15330/pcss.18.2.194-197

Authors

N.S. Liakh-Kaguy
A.A. Druzhinin Lviv Polytechnic National University
I.P. Ostrovskii Lviv Polytechnic National University
Yu.N. Khoverko Міжнародна лабораторія сильних магнітних полів і низьких температур

DOI:

https://doi.org/10.15330/pcss.18.2.194-197

Keywords:

Bi2Se3 whiskers, transversemagnetoresistance, effect Kondo, superconductivity

Abstract

Temperature dependencies of Bi₂Se₃ whiskers’ resistance with Pd doping concentration of 1´10¹⁹cm^-3where measured in temperature range 4.2 - 300 K. At temperature 5.3 K a sharp drop in the whisker resistance was found. The observed effect is likely connected with contribution of two processes such as the electron localization in the whiskers and transition in superconducting state at temperature 5.3 K, which is likely result from Pd complexes.
Transversemagnetoresistance in n-type Bi₂Se₃ whiskers with Pd doping concentration in the vicinity to themetal-insulator transition (MIT) from metal side of the transition were studied in magnetic field 0 -10 T. For the whiskers a resistance minimum was observed at temperature about 25 K that is connected with Kondo effect.

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