Electron spin relaxation beyond D'yakonov-Perel' interaction in GaAs/AlGaAs quantum wells

Y. Ohno, R. Terauchi, T. Adachi, F. Matsukura, H. Ohno

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40 Citations (Scopus)


To study electron spin relaxation mechanisms in GaAs/AlGaAs quantum wells (QWs), undoped and n-doped (1 0 0) and (1 1 0) QWs with different well width and doping density are prepared and measured. The temperature dependence of electron spin relaxation time τs in n-doped (1 0 0) QWs above 30 K is shown to be in good agreement with what is expected from the D'yakonov-Perel' (DP) mechanism. In (1 1 0) QWs, a 30-fold increase of τs over (1 0 0) QWs at room temperature is observed. This dramatic increase is explained by the suppression of the DP mechanism. The remaining spin relaxation processes in (1 1 0) QWs are discussed.

Original languageEnglish
Pages (from-to)817-820
Number of pages4
JournalPhysica E: Low-Dimensional Systems and Nanostructures
Issue number1
Publication statusPublished - 2000 Feb
Event13th International Conference on the Electronic Properties of Two-Dimensional Systems (EP2DS-13) - Ottawa, Ont, Can
Duration: 1999 Aug 11999 Aug 6


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