Нелинейные вольт-амперные характеристики особочистых монокристаллов вольфрама при низких температурах и в сильных магнитных полях

Abstract

The magnetoresistance and the current-voltage characteristics of tungsten single crystals with a resistivity ratio ρ300K/ρ4.2K = 80000 at T = 4,2 K in fields up to 150 kOe were investi-gated. As a result of the research, nonlinear VACs were found in the magnetoresistance of tungsten crystals under the conditions of SSE. It is suggested that the possible cause of the observed nonlinearities is the effect of phonon generation by supersonic drift of charge car-riers near the conductor surface.