Complementary influence of electric and magnetic fields on the sample voltage oscillations ofP-type ultrapure germanium

Formation of current filaments in n-type GaAs under crossed electric and magnetic fields

“…23 Among these experimental investigations, some have revealed that applying a magnetic field perpendicular to the electric field significantly changes the spatiotemporal behavior involved in the breakdown regime. For instance, it has been observed that even a relatively weak magnetic field can induce complex chaotic current oscillations, [14][15][16][17][18][19] current filaments traveling transversally, 24 and filaments spatially deformed by the Lorentz force. 8,21,22 Some theoretical work has also been carried out to investigate the effects of a magnetic field in the breakdown regime.…”

“…In the breakdown regime, self-sustained periodic and complex chaotic oscillations have often been observed under dc bias, [12][13][14][15][16][17][18][19] and the spatial patterns of current filaments have been imaged by different techniques, such as scanning electron microscopy, 20 scanning laser microscopy, 8,21,22 and quenched photoluminescence measurement. 23 Among these experimental investigations, some have revealed that applying a magnetic field perpendicular to the electric field significantly changes the spatiotemporal behavior involved in the breakdown regime.…”