W line shape in the resistively detected nuclear magnetic resonance. (18th June 2015)

• Record Type: Journal Article
• Authors: Desrat, W; Piot, B A; Maude, D K; Wasilewski, Z R; Henini, M; Airey, R
• Is Part Of: Journal of physics. Volume 27:Number 27(2015)
• Publication Date: 2015-06-18
• Subjects: quantum Hall effect -- resistively detected nuclear magnetic resonance (RDNMR) -- electronic domains -- electronic spin polarization; Condensed matter -- Periodicals; Matière condensée -- Périodiques; Vaste stoffen; Vloeistoffen; Natuurkunde; Electronic journals; Computer network resources; 530.4105
• DOI: 10.1088/0953-8984/27/27/275801
• Languages: English
• ISSNs: 0953-8984

Abstract

Abstract: The resistively detected nuclear magnetic resonance (RDNMR) performed on a two-dimensional electron gas is known to exhibit a peculiar 'dispersive' line shape at some filling factors, especially around . Here, we study in detail the inversion of the dispersive line shape as a function of the filling factor from to . The RDNMR spectra show a new characteristic W line shape in the longitudinal resistance, whereas dispersive lines detected in the Hall resistance remain unchanged. This W resonance, like the dispersive line, can be fitted correctly by a model of two independent response functions, which are the signatures of polarized and unpolarized electronic sub-systems.