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Detection of large magnetoanisotropy of electron spin dephasing in a high-mobility two-dimensional electron system in a [001] GaAs/AlxGa1−xAs quantum well

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Stich, Dominik ; Jiang, J. ; Korn, Tobias ; Schulz, Robert ; Schuh, Dieter ; Wegscheider, Werner ; Wu, M. ; Schüller, Christian
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Date of publication of this fulltext: 05 Aug 2009 13:57


In time-resolved Faraday rotation experiments, we have detected an in-plane anisotropy of the electron spin-dephasing time SDT in an n-modulation-doped GaAs/Al0.3Ga0.7As single quantum well. The SDT was measured with magnetic fields of B1 T, applied in the 110 and 11¯0 in-plane crystal directions of the GaAs quantum well. For fields along 11¯0, we have found up to a factor of about 2 larger SDT ...


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