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Dynamics of optically injected two-dimensional currents
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10.1063/1.3020519
/content/aip/journal/jap/104/10/10.1063/1.3020519
http://aip.metastore.ingenta.com/content/aip/journal/jap/104/10/10.1063/1.3020519
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

(a) A sketch of the optical current injection scenario. The MQW structure with (gray bands for GaAs) is shown. Vectors correspond to the polarization of the photons. (b) The scheme of the probe of the puddle displacement. Figure is not to scale.

Image of FIG. 2.
FIG. 2.

Mean spot displacements extracted from pump-probe experiments, extracted from the total dipole moment, and , the contribution of the electron density displacement in the dipole moment. The numbers of quantum wells are (upper panel) and (lower panel). The parameters are , , and . The spot size , , and .

Image of FIG. 3.
FIG. 3.

Charge density distribution at for (upper panel) and (lower panel). System parameters are the same as in Fig. 2.

Image of FIG. 4.
FIG. 4.

Current density distribution (in arbitrary units) at for (upper panel) and (lower panel). Left and right columns show the and components of the current density, respectively. System parameters are the same as in Fig. 2.

Image of FIG. 5.
FIG. 5.

Left column: Spin current density at . Right column: Spin density distribution at . The parameters (upper panel) and (lower panel). The spin-Hall time . Other system parameters are the same as in Fig. 2.

Image of FIG. 6.
FIG. 6.

Mean spot displacement (extracted from the first moment of the distribution function) due to the extrinsic spin-Hall effect. System parameters are the same as in Fig. 5.

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/content/aip/journal/jap/104/10/10.1063/1.3020519
2008-11-17
2014-04-24
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Dynamics of optically injected two-dimensional currents
http://aip.metastore.ingenta.com/content/aip/journal/jap/104/10/10.1063/1.3020519
10.1063/1.3020519
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