Abstract
Current filamentation and chaotic temporal resistance behavior generated in homogeneously p-doped germanium during low-temperature avalanche breakdown have been investigated. Spontaneous current oscillations showing typical chaotic scenarios were found under tiny variation of distinct control parameters (d.c. bias voltage, transverse magnetic field, temperature). By means of a scanning electron microscope equipped with a liquidhelium stage, two-dimensional imaging of current filaments has been performed. In particular, the filament nucleation and the subsequent growth processes could be resolved. Furthermore, the origin of the spontaneous oscillations was found to be closely linked to the formation of the current filament pattern.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
