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Updated: Jul 11, 2026

Dissolution Dynamic Nuclear Polarization Instrumentation for Real-time Enzymatic Reaction Rate Measurements by NMR
Published on: February 23, 2016
Ettingshausen effect around a Landau level filling factor nu = 3 studied by dynamic nuclear polarization
Yosuke Komori1, Satoru Sakuma, Tohru Okamoto
1Department of Physics, University of Tokyo, 7-3-1 Hongo, Tokyo, Japan.
Abstract:
A spin current perpendicular to the electric current is investigated around a Landau level filling factor nu=3 in a GaAs/AlGaAs two-dimensional electron system. Measurements of dynamic nuclear polarization in the vicinity of the edge of a specially designed Hall bar sample indicate that the direction of the spin current with respect to the Hall electric field reverses its polarity at nu=3, where the dissipative current carried by holes in the spin up Landau level is replaced with that by electrons in the spin down Landau level.
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