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Observation of the zero-magnetic-field exciton spin splitting in high quality bulk GaAs and AlGaAs
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10.1063/1.3257369
/content/aip/journal/apl/95/18/10.1063/1.3257369
http://aip.metastore.ingenta.com/content/aip/journal/apl/95/18/10.1063/1.3257369
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

PL and polarization degree time traces of the FX line for the sample. Solid lines are exponential fits of polarization decay. The excitation is done at 1.763 eV (32 meV above FX energy), with (gray line and squares) and (black line and circles). The inset shows co- and cross-polarized ( and , respectively) spectra and polarization degree at a delay of 330 ps (integrated from 305 to 355 ps) for .

Image of FIG. 2.
FIG. 2.

Time evolutions of the splitting for the sample, excited at 1.763 eV. The gray lines are double exponential fits (described in the text). The inset shows the dependence of the exciton formation time on excitation density.

Image of FIG. 3.
FIG. 3.

Dependence of the value of the splitting at on for the GaAs and AlGaAs samples (points) and model prediction (line).

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/content/aip/journal/apl/95/18/10.1063/1.3257369
2009-11-06
2014-04-18
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Observation of the zero-magnetic-field exciton spin splitting in high quality bulk GaAs and AlGaAs
http://aip.metastore.ingenta.com/content/aip/journal/apl/95/18/10.1063/1.3257369
10.1063/1.3257369
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