Manipulation of nuclear spin dynamics in n-GaAs using an on-chip microcoil

作者：Chen Y S^*; Huang J; Ludwig A; Reuter D; Wieck A D; Bacher G

来源：Journal of Applied Physics, 2011, 109(1): 016106.

DOI：10.1063/1.3530731

We present an approach for electrically manipulating nuclear spins in n-GaAs using an on-chip microcoil. Optically injected spin-polarized electrons are used to generate a dynamic nuclear polarization via electron-nucleus hyperfine interaction with a characteristic time constant of similar to 10 min. The saturated Overhauser field amplitude is on the order of several 10 mT and proportional to the spin polarization degree of the injected electrons. Applying an rf field resonant for the As-75 nuclei, complete depolarization of As-75 nuclear spins is observed.

• 出版日期2011-1-1