Low temperature performances of doped gasb whiskers

: pp.75-78
Lviv Polytechnic National University, International Laboratory of High Magnetic Fields and Low Temperatures
Lviv Polytechnic National University
Lviv Polytechnic National University, International Laboratory of High Magnetic Fields and Low Temperatures
Lviv Polytechnic National University
Lviv Polytechnic National University

Temperature dependencies of n-type GaSb whisker resistance are measured in the temperature range of 1,5–300 K and in the magnetic field up to 14 T. The peculiarities of whisker resistance in the low temperature range (a sharp drop in the whisker resistance at about 4,2 K) are observed. Superconductivity in the whiskers is caused by the appearance of weak antilocalization, which leads to the emergence of negative magnetoresistance. The magnetoconductivity of these whiskers in the low field regime turns out to be well described by a two-dimensional (2D) weak antilocalization (WAL) model.

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