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arXiv · 1309.5185

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

Minh-Hai Nguyen·Shibun Tsuda·Daiju Terasawa·Akira Fukuda·Yangdong Zheng·Anju Sawada
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Abstract

At the spin transition point of $ν=2/3$ 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.

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Minh-Hai Nguyen, Shibun Tsuda, Daiju Terasawa, Akira Fukuda, Yangdong Zheng, Anju Sawada. 2013-09-20. Interlayer Diffusion of Nuclear Spin Polarization in $ν=2/3$ Quantum Hall States. https://doi.org/10.1103/physrevb.89.041403

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