Interlayer Diffusion of Nuclear Spin Polarization in $\nu =2/3$ Quantum Hall States

Abstract

At the spin transition point of $\nu =2/3$ quantum Hall states, nuclear spins in a two-dimensional electron gas are polarized by an electric current. Using GaAs/AlGaAs double-quantum-well samples, we first observed the spatial diffusion of nuclear spin polarization between the two layers when the nuclear spin polarization is current-induced in one layer. By numerical simulation, we estimated the diffusion constant of the nuclear spin polarization to be $15\pm 7$\,nm${}^2$/s.

Submitted to PRL

References in corpus (9)

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• Hole - Nuclear Spin Interaction in Quantum Dots
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Cited by in corpus (2)

• Nuclear spin diffusion in the central spin system of a GaAs/AlGaAs quantum dot
• Anisotropic nuclear-spin diffusion in double quantum wells