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Dynamics of nuclear spins appearing in transport measurements of an inter-edge spin diode in tilted magnetic fields |
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| Authors: | G Sukhodub F Hohls RJ Haug DK Maude D Reuter AD Wieck |
| Institution: | aInstitut für Festkörperphysik, Universität Hannover, Appelstr. 2, D-30167 Hannover, Germany;bHigh Magnetic Field Laboratory, CNRS, 25 Avenue des Martyrs, BP 166, F-38042 Grenoble cedex 9, France;cLehrstuhl für Angewandte Festkörperphysik, Ruhr-Universität Bochum, Universitätsstraße 150, D-44780 Bochum, Germany |
| Abstract: | In a wide range of magnetic fields nonlinear transport between spin polarized edge channels is studied. The observed hysteresis of the I–V characteristic is attributed to the dynamic nuclear spin polarization due to the electronic spin-flip processes. We find extremely long nuclear spin relaxation times in the regime where the hyperfine interaction with electrons is switched off. |
| Keywords: | Edge channels Quantum Hall effect Dynamic nuclear polarization |
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