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arXiv · 1811.12885

Subsecond nuclear spin dynamics in $n$-GaAs

P. S. Sokolov·M. Yu. Petrov·K. V. Kavokin·M. S. Kuznetsova·S. Yu. Verbin·I. Ya. Gerlovin·D. R. Yakovlev·M. Bayer
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Abstract

We use time-resolved detection of the Hanle effect and polarized photoluminescence with dark intervals to investigate the buildup and decay of the spin polarization of nuclei interacting with donor-bound electrons in $n$-doped GaAs. Strong hyperfine coupling defines the millisecond timescale of the spin dynamics of these nuclei, as distinct from the nuclei far from impurity centers, characterized by a thousand times longer spin-relaxation time. The dynamics of spin polarization and relaxation attributed to the nuclei inside the donor orbit is observed on the time scale from 200 to 425 ms.

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P. S. Sokolov, M. Yu. Petrov, K. V. Kavokin, M. S. Kuznetsova, S. Yu. Verbin, I. Ya. Gerlovin, D. R. Yakovlev, M. Bayer. 2018-11-30. Subsecond nuclear spin dynamics in $n$-GaAs. https://doi.org/10.1103/physrevb.99.075307

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