Hysteretic dynamic nuclear polarization in GaAs/AlxGa1−xAs (110) quantum wells

H. Sanada, S. Matsuzaka, K. Morita, C. Y. Hu, Y. Ohno, H. Ohno

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18 Citations (Scopus)


We investigated the dynamics of a coupled electron-nuclear spin system in a GaAs/AlGaAs (110) quantum well by time-resolved Faraday rotation measurements. Photoexcited electron spins with long coherence time (T2* = 6 ns) are strongly subject to a nuclear field as well as polarizing the nuclei. A hysteretic behavior was observed in the magnetic-field dependence of the nuclear polarization under optical orientation. Our quantitative analysis based on self-consistent calculations reproduced the experimental observation of the bistable configurations of dynamic nuclear polarization.

Original languageEnglish
JournalPhysical Review B - Condensed Matter and Materials Physics
Issue number24
Publication statusPublished - 2003 Dec 15


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