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Resistively detected NMR in a two-dimensional electron system near ν = 1: Clues to the origin of the dispersive lineshape

Tracy, L. A. and Eisenstein, J. P. and Pfeiffer, L. N. and West, K. W. (2006) Resistively detected NMR in a two-dimensional electron system near ν = 1: Clues to the origin of the dispersive lineshape. Physical Review B, 73 (12). Art. No. 121306(R). ISSN 1098-0121. https://resolver.caltech.edu/CaltechAUTHORS:TRAprb06

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Abstract

Resistively detected nuclear magnetic resonance (NMR) measurements on 2D electron systems near the nu=1 quantum Hall state are reported. In contrast to recent results of Gervais et al. [Phys. Rev. Lett. 94, 196803 (2005)], a dispersive line shape is found at all radio-frequency powers studied and Korringa-type nuclear spin-lattice relaxation is observed. The shape of the unexplained dispersive line shape is found to invert when the temperature derivative of the longitudinal resistance changes sign. This suggests that both Zeeman and thermal effects are important to resistively detected NMR in this regime.


Item Type:Article
Related URLs:
URLURL TypeDescription
https://doi.org/10.1103/PhysRevB.73.121306DOIArticle
https://arxiv.org/abs/cond-mat/0511321arXivDiscussion Paper
Additional Information:© 2006 The American Physical Society. (Received 9 November 2005; revised 19 January 2006; published 27 March 2006) It is a pleasure to acknowledge several helpful conversations with S. M. Girvin. This work was supported by the DOE under Grant No. DE-FG03-99ER45766 and the NSF under Grant No. DMR-0242946.
Funders:
Funding AgencyGrant Number
Department of Energy (DOE)DE-FG03-99ER45766
NSFDMR-0242946
Subject Keywords:two-dimensional electron gas; nuclear magnetic resonance; quantum Hall effect; nuclear spin-lattice relaxation; Zeeman effect
Issue or Number:12
Record Number:CaltechAUTHORS:TRAprb06
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:TRAprb06
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:4253
Collection:CaltechAUTHORS
Deposited By: Archive Administrator
Deposited On:09 Aug 2006
Last Modified:12 Dec 2019 17:06

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