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arXiv · 1103.2474

Electron spin relaxation as evidence of excitons in an electron-hole plasma

S. Oertel·S. Kunz·D. Schuh·W. Wegscheider·J. Hübner·M. Oestreich
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Abstract

We exploit the influence of the Coulomb interaction between electrons and holes on the electron spin relaxation in a (110)-GaAs quantum well to unveil excitonic signatures within the many particle electron-hole system. The temperature dependent time- and polarization-resolved photoluminescence measurements span five decades of carrier density, comprise the transition from localized excitons over quasi free excitons to an electron-hole plasma, and reveal strong excitonic signatures even at relatively high densities and temperatures.

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S. Oertel, S. Kunz, D. Schuh, W. Wegscheider, J. Hübner, M. Oestreich. 2011-04-06. Electron spin relaxation as evidence of excitons in an electron-hole plasma. https://arxiv.org/abs/1103.2474

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