Superconductivity and weak localization of PdxBi2Se3 whiskers at low temperatures

被引：7
|
作者：
Druzhinin, Anatoly [1 ,2 ]
Ostrovskii, Igor [1 ]
Khoverko, Yuriy [1 ,2 ]
Rogacki, Krzysztof [2 ]
Liakh-Kaguy, Natalia [1 ]
机构：
[1] Lviv Polytech Natl Univ, Lvov, Ukraine
[2] PAS, Inst Low Temp & Struct Res, Wroclaw, Poland
来源：
APPLIED NANOSCIENCE | 2018年 / 8卷 / 04期
关键词：
Bi2Se3; whiskers; Magnetoresistance; Superconductivity; Weak antilocalization; MAGNETORESISTANCE; BI;
D O I：
10.1007/s13204-018-0671-6
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The temperature dependencies of Bi2Se3 whiskers' resistance with Pd doping concentration of (1 divided by 2) x10(19) cm(-3) where measured in the temperature range 1.5 divided by 77 K. At temperature 5.3 K a sharp drop in the whisker resistance was found. The observed effect is likely connected with the contribution of two processes such as the electron localization and superconductivity at temperatures below 5.3 K. The magnetoresistance in the n-type conductivity Bi2Se3 whiskers with different doping concentration of palladium that correspond to metal side of the metal-insulator transition was studied at low temperatures and magnetic field 0 divided by 10 T. The whisker magnetoconductance is considered in the framework of the weak antilocalization model and connected with subsurface layers of Bi2Se3 whiskers.
引用
收藏
页码：877 / 883
页数：7
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