Publication
Applied Physics Letters
Paper

Effects of carrier mass differences on the current-voltage characteristics of resonant tunneling structures

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Abstract

We show that the current-voltage characteristics of resonant tunneling structures are drastically influenced by the difference of electronic effective masses between the electrodes and the quantum well. In particular, if the mass in the well is larger than that in the emitter, the current peak is shifted to lower voltages, relative to the more conventional case of equal masses. This situation is illustrated experimentally with GaAs/AlAs/GaAs heterostructures, in which Γ electrons emitted from GaAs tunnel resonantly through the AlAs X point, where the mass is considerably heavier.

Date

01 Dec 1990

Publication

Applied Physics Letters

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