Am. Belyantsev et Yy. Romanova, INTERVALLEY MECHANISM FOR THE FORMATION OF S-TYPE NEGATIVE DIFFERENTIAL CONDUCTIVITY IN SHORT HETEROSTRUCTURES, Semiconductors, 29(8), 1995, pp. 781-782
The Monte-Carlo method is applied to a study of current transport in a
n AlxGa1-xAs-GaAs-AlAs double-barrier heterostructure with a triangula
r ''cathode'' barrier. It is shown that at low electron concentrations
in the potential well the negative differential conductivity (S-type
current-voltage characteristic) is due mainly to intervalley transitio
ns. (C) 1995 American Institute of Physics.