화학공학소재연구정보센터
Molecular Crystals and Liquid Crystals, Vol.701, No.1, 82-90, 2020
Magneto-transport properties of Bi(2)Se(3)whiskers: superconductivity and weak localization
The Bi(2)Se(3)whisker temperature dependencies of resistance with palladium doping concentration of (1 divided by 2)x10(19) cm(-3)were studied in the range of 1.5 divided by 77 K. At the temperature of 5.3 K there was found a sharp drop in the whisker resistance. This effect can be explained as a contribution of two processes: electron localization and superconductivity at temperatures under 5.3 K. The magnetoresistance in Bi(2)Se(3)whiskers with n-type conductivity and diverse concentration of Pd that correspond to the metal side of the MIT (metal-insulator transition) was studied at low temperatures and magnetic field in the range of 0 divided by 10 T. The magnetoconductance was considered in the structure by the weak antilocalization model and attached with subsurface layers of Bi(2)Se(3)whiskers.