Low Temperature Physics: 37, 852 (2011); https://doi.org/10.1063/1.3670029 (4 pages)
Fizika Nizkikh Temperatur: Volume 37, Number 9-10 (September 2011), p. 1068-1072 ( to contents , go back )
Quadratic temperature dependence of magnetoresistivity of pure tungsten single crystals under static skin effect
Institute of Metal Physics , S. Kovalevskoyi st. 18, Ekaterinburg 620990, Russia
International Laboratory of High Magnetic Fields and Low Temperatures, 53-421 Wroclaw, Poland
Reseived April 1, 2011
The transverse magnetoresistivity of tungsten single crystals with residual resistivity ratio ρ293K / ρ4.2K of about 75000 was measured in the temperature interval from 2 to 75 K and in magnetic fields of up to 80 kOe. It is found that at low temperatures these “size” crystals display a quadratic temperature dependence of magnetoresistivity ρxx. It is shown that the observed quadratic dependence ρxx(T) appears under static skin effect and is a manifestation of the interference scattering mechanism electron–phonon–surface, similar to what happens in pure metals without a magnetic field. A qualitative explanation of the observed dependence is proposed.
PACS: 72.15.Gd Galvanomagnetic and other magnetotransport effects;
Key words: static skin effect, magnetoresistivity, tungsten single crystals.