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.
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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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