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Optically controlled spin polarization in a spin transistor
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10.1063/1.3111442
/content/aip/journal/apl/94/16/10.1063/1.3111442
http://aip.metastore.ingenta.com/content/aip/journal/apl/94/16/10.1063/1.3111442
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

(a) A polarized laser pulse excitations in the dot, and electrons and holes tunnel out forced by the applied bias voltage. (b) Schematic of a three-terminal spin device, where three normal metal leads are coupled with a QD irradiated by a continuous circularly polarized light.

Image of FIG. 2.
FIG. 2.

(a) Total charge current and (b) spin polarization vs the bias voltage for different Coulomb interactions. Other parameters used in the calculation are , , and .

Image of FIG. 3.
FIG. 3.

The spin-polarized currents in leads vs (a) the voltage (dashed line) and (b) the Rabi frequency . , , and represent the positions for fully spin-polarized current. and denote the positions for pure spin current. Solid line in Fig. 3(a) represents for . Other parameters used in the calculation are , , , , and .

Image of FIG. 4.
FIG. 4.

The spin current with different degrees of polarization vs temperature. Other parameters used in the calculation are , , , , and .

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/content/aip/journal/apl/94/16/10.1063/1.3111442
2009-04-22
2014-04-17
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Optically controlled spin polarization in a spin transistor
http://aip.metastore.ingenta.com/content/aip/journal/apl/94/16/10.1063/1.3111442
10.1063/1.3111442
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