Abstract
The self-generated formation of spontaneous current oscillations developing during low-temperature impact ionization breakdown of slightly doped p-type germanium is explained, taking advantage of a model experiment. Upon applying a relatively small transverse magnetic field, the spatially inhomogeneous current distribution, manifest in the form of individual high conducting current filaments, undergoes distinct travelling dynamics that is oriented perpendicular to the direction of the electric and the magnetic field (i.e. not coincident with the direction of the current flow). The resulting magnetic field induced oscillatory behaviour can be described qualitatively by simple model considerations.
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