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          Institute: MPI für Festkörperforschung     Collection: FKF Publikationen 2004     Display Documents



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ID: 192774.0, MPI für Festkörperforschung / FKF Publikationen 2004
Anomalous-filling-factor-dependent nuclear-spin polarization in a 2D electron system
Authors:Smet, J. H.; Deutschmann, R. A.; Ertl, F.; Wegscheider, W.; Abstreiter, G.; von Klitzing, K.
Language:English
Date of Publication (YYYY-MM-DD):2004
Title of Journal:Physical Review Letters
Volume:92
Issue / Number:8
Sequence Number of Article:086802
Review Status:not specified
Audience:Not Specified
Abstract / Description:Spin-related electronic phase transitions in the fractional quantum
Hall regime are accompanied by a large change in resistance. Combined
with their sensitivity to spin orientation of nuclei residing in the
same plane as the 2D electrons, they offer a convenient electrical
probe to carry out nuclear magnetometry. Despite conditions which
should allow both electronic and nuclear-spin subsystems to approach
thermodynamic equilibrium, we uncover for the nuclei a remarkable and
strongly electronic filling-factor-dependent deviation from the
anticipated thermal nuclear-spin polarization.
External Publication Status:published
Document Type:Article
Communicated by:Michaela Asen-Palmer
Affiliations:MPI für Festkörperforschung
External Affiliations:Max Planck Inst Festkorperforsch, D-70569 Stuttgart, Germany.
; Tech Univ Munich, Walter Schottky Inst, D-85748 Garching, Germany.
; Univ Regensburg, Inst Expt & Angew Phys, D-93040 Regensburg, Germany.
Identifiers:ISI:000189266100044 [ID No:1]
ISSN:0031-9007 [ID No:2]
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