Two-step barrier diodes

Schulz, P. A.; Gonçalves da Silva, C. E. T.
March 1988
Applied Physics Letters;3/21/1988, Vol. 52 Issue 12, p960
Academic Journal
Transmission probabilities and current densities of a two-step barrier heterostructure are calculated within the effective-mass approximation as a function of electron energy and applied bias. This system shows negative differential resistance under forward bias, because of a quasibound state in a triangular well, and no resonance under reverse bias, in the current density. The two-step barrier diode may show negative resistance in an ac field in the absence of a dc bias.


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