New Type of Electron Nuclear-Spin Interaction from Resistively Detected NMR in the Fractional Quantum Hall Effect Regime

1998/12/01 by S. Kronmüller, S. Kronmueller, W. Dietsche +5 · 1 citation
Physics and Astronomy · #Condensed matter physics #Electron #Fractional quantum Hall effect #Magnetic field #Magnetic properties of thin films #Physics #Physics of Superconductivity and Magnetism #Quantum Hall effect #Quantum and electron transport phenomena #Quantum mechanics #Quantum spin Hall effect #Quantum well #Spin (aerodynamics) #Type (biology) #cond-mat.mes-hall

paper · pdf · doi:10.1103/physrevlett.82.4070

4 pages, 3 figures

arxiv created 1998/12/01 · openalex publication_date 1999/05/17 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

Two-dimensional electron gases in narrow GaAs quantum wells show huge longitudinal resistance (HLR) values at certain fractional filling factors. Applying an rf field with frequencies corresponding to the nuclear spin splittings of ⁶⁹Ga, ⁷¹Ga, and ⁷⁵As leads to a substantial decrease of the HLR establishing a novel type of resistively detected NMR. These resonances are split into four sublines each. Neither the number of sublines nor the size of the splitting can be explained by established interaction mechanisms.

Citations

• Two-Dimensional Magnetotransport in the Extreme Quantum Limit
• Dynamic nuclear polarization at the edge of a two-dimensional electron gas

Cited by

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