Rhone, TD;
Majumder, D;
Dennis, BS;
Hirjibehedin, C;
Dujovne, I;
Groshaus, JG;
Gallais, Y;
... West, K; + view all
(2011)
Higher-Energy Composite Fermion Levels in the Fractional Quantum Hall Effect.
PHYS REV LETT
, 106
(9)
, Article 096803. 10.1103/PhysRevLett.106.096803.
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Abstract
Even though composite fermions in the fractional quantum Hall liquid are well established, it is not yet known up to what energies they remain intact. We probe the high-energy spectrum of the 1/3 liquid directly by resonant inelastic light scattering, and report the observation of a large number of new collective modes. Supported by our theoretical calculations, we associate these with transitions across two or more composite fermions levels. The formation of quasiparticle levels up to high energies is direct evidence for the robustness of topological order in the fractional quantum Hall effect.
| Type: | Article |
|---|---|
| Title: | Higher-Energy Composite Fermion Levels in the Fractional Quantum Hall Effect |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1103/PhysRevLett.106.096803 |
| Publisher version: | http://dx.doi.org/10.1103/PhysRevLett.106.096803 |
| Language: | English |
| Additional information: | © 2011 American Physical Society |
| Keywords: | MAGNETIC-FIELDS, EXCITATIONS, STATE, SPECTRUM |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > London Centre for Nanotechnology |
| URI: | https://discovery.ucl.ac.uk/id/eprint/1318956 |
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