Title :
Static negative resistance in Gunn effect materials with field-dependent carrier diffusion
fDate :
6/1/1971 12:00:00 AM
Abstract :
A numerical study of the equations governing the electric field in Gunn effect materials under constant bias shows that static negative resistance (SNR) can occur as a bulk effect when certain conditions regarding carrier diffusion are satisfied. This result places an important limitation on Shockley´s positive conductance theorem in that a completely general extension of the theorem to cases where diffusion is field dependent cannot exist.
Keywords :
Circuits; Conducting materials; Electric resistance; Geometry; Gunn devices; Impurities; Mathematical analysis; Permittivity; Poisson equations; Voltage;
Journal_Title :
Electron Devices, IEEE Transactions on
DOI :
10.1109/T-ED.1971.17209
