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

2011/03/12 by S. Oertel, S. Kunz, Oertel, S. +9
Chemistry · Medicine · Physics and Astronomy · #Atomic physics #Condensed matter physics #Electron #Electron hole #Exciton #FOS: Physical sciences #Medicine #Mesoscale and Nanoscale Physics (cond-mat.mes-hall) #Physics #Plasma #Quantum and electron transport phenomena #Quantum mechanics #Relaxation (psychology) #Semiconductor Quantum Structures and Devices #Spectroscopy and Laser Applications #Spin (aerodynamics) #cond-mat.mes-hall

paper · pdf · doi:10.48550/arxiv.1103.2474

openalex publication_date 2011/03/12 · arxiv created 2011/04/06 · arxiv updated 2011/04/07 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28

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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