Anharmonic oscillator model of a quantum dot nanostructure

The energy level spacings observed recently in resonant tunneling through an axially symmetric double-barrier quantum dot structure are reproduced by an isotropic two-dimensional anharmonic oscillator model. We propose that the extent of the depletion region in such a device effectively controls the...

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Bibliographic Details
Published in:Applied physics letters 1989-05, Vol.54 (20), p.1997-1999
Main Authors: LUBAN, M, LUSCOMBE, J. H, REED, M. A, PURSEY, D. L
Format: Article
Language:English
Subjects:
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Electronic structure and electrical properties of surfaces, interfaces, thin films and low-dimensional structures
Exact sciences and technology
Physics
Surface and interface electron states
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Summary:The energy level spacings observed recently in resonant tunneling through an axially symmetric double-barrier quantum dot structure are reproduced by an isotropic two-dimensional anharmonic oscillator model. We propose that the extent of the depletion region in such a device effectively controls the possible angular momentum states of those electrons contributing to the current-voltage curve.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.101194