Nonequilibrium transport and population inversion in double quantum dot systems
Journal Article
·
· International Journal of Modern Physics B
- Los Alamos National Lab., NM (United States)
- City Univ. of New York, NY (United States). Dept. of Physics
The authors present a microscopic theory for both equilibrium and nonequilibrium transport properties of coupled double quantum dots (DQD). A general formula for current tunneling through the DQD is derived by the nonequilibrium Green`s function method. Using a Hartree-Fock approach, effects of multi-level coupling and nonequilibrium electron distributions in resonant tunneling are considered. They find that the peak i n the resonant tunneling current through two symmetric dots will split only when the inter-dot coupling is stronger than dot-lead coupling. They predict that population inversion can be achieved in one dot in the nonequilibrium regime.
- OSTI ID:
- 477341
- Journal Information:
- International Journal of Modern Physics B, Vol. 11, Issue 12; Other Information: PBD: 20 May 1997
- Country of Publication:
- United States
- Language:
- English
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