Spin bottleneck in resonant tunneling through double quantum dots with different Zeeman splittings.
Phys Rev Lett
; 104(13): 136801, 2010 Apr 02.
Article
em En
| MEDLINE
| ID: mdl-20481900
ABSTRACT
We investigated the electron transport property of the InGaAs/GaAs double quantum dots, the electron g factors of which are different from each other. We found that in a magnetic field, the resonant tunneling is suppressed even if one of the Zeeman sublevels is aligned. This is because the other misaligned Zeeman sublevels limit the total current. A finite broadening of the misaligned sublevel partially relieves this bottleneck effect, and the maximum current is reached when interdot detuning is half the Zeeman energy difference.
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Base de dados:
MEDLINE
Idioma:
En
Ano de publicação:
2010
Tipo de documento:
Article