Landau level spin diode in a GaAs two dimensional hole system
O. Klochan, A. R. Hamilton, K. das Gupta, F. Sfigakis, H. E. Beere, D., A. Ritchie
TL;DR
This paper reports the fabrication and characterization of a Landau level spin diode in a GaAs two-dimensional hole system, revealing suppressed hole-nuclear spin interactions compared to electron systems.
Contribution
It introduces a novel Landau level spin diode in a GaAs hole system and demonstrates significantly reduced hyperfine coupling effects.
Findings
No detectable net nuclear polarization observed.
Hole-nuclear spin flip-flop processes are suppressed by over three orders of magnitude.
Provides insights into spin interactions in hole-based quantum systems.
Abstract
We have fabricated and characterized the Landau level spin diode in GaAs two dimensional hole system. We used the hole Landau level spin diode to probe the hyperfine coupling between the hole and nuclear spins and found no detectable net nuclear polarization, indicating that hole-nuclear spin flip-flop processes are suppressed by at least three orders of magnitude compared to GaAs electron systems.
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