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Fractional quantum Hall effect measures at zero g factor

Leadley, DR; Nicholas, RJ; Maude, DK; Utjuzh, AN; Portal, JC; Harris, JJ; Foxon, CT; (1997) Fractional quantum Hall effect measures at zero g factor. Physical Review Letters , 79 (21) 4246 - 4249. 10.1103/PhysRevLett.79.4246. Green open access

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Abstract

Fractional quantum Hall effect energy gaps have been measured as a function of Zeeman energy. The gap at ν = 1/3 decreases as the g factor is reduced by hydrostatic pressure. This behavior is similar to that at ν = 1 and shows that the excitations are spinlike. At small Zeeman energy, the excitation is consistent with the reversal of 3 spins and may be interpreted as a small composite Skyrmion. At 20 kbar, where g has changed sign, the 1/3 gap appears to increase again.

Type: Article
Title: Fractional quantum Hall effect measures at zero g factor
Open access status: An open access version is available from UCL Discovery
DOI: 10.1103/PhysRevLett.79.4246
Publisher version: http://dx.doi.org/10.1103/PhysRevLett.79.4246
Language: English
Additional information: © 1997 The American Physical Society
Keywords: measures
UCL classification: UCL
UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science
URI: https://discovery.ucl.ac.uk/id/eprint/180263
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