Schueller, C. and Broocks, K.-B. and Schroeter, P. and Heyn, C. and Heitmann, D. and Bichler, M. and Wegscheider, Werner and Chakraborty, Tapash and Apalkov, V. M. (2003) Optical probing of a fractionally charged quasihole in an incompressible liquid. PHYSICAL REVIEW LETTERS, 91 (11): 116403. ISSN 0031-9007
Full text not available from this repository.Abstract
In photoluminescence spectroscopy of a low-mobility two-dimensional electron gas subjected to a quantizing magnetic field, we observe an anomaly around nu=1/3 at a very low temperature (0.1 K) and an intermediate electron density (0.9x10(11) cm(-2)). The anomaly is explained as due to perturbation of the incompressible liquid at the Laughlin state due to close proximity of a localized charged exciton which creates a fractionally charged quasihole in the liquid. The anomaly of similar to2 meV can be destroyed by applying a small thermal energy of similar to0.2 meV that is enough to close the quasihole energy gap.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | 2-DIMENSIONAL ELECTRON-GAS; MAGNETIC-FIELD; COMPOSITE FERMIONS; GROUND-STATES; QUANTUM FLUID; EXCITATIONS; EXCITONS; SPECTROSCOPY; TRANSITION; EMISSION; |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Experimental and Applied Physics > Alumni or Retired Professors > Group Werner Wegscheider |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 29 Jul 2021 10:24 |
| Last Modified: | 29 Jul 2021 10:24 |
| URI: | https://pred.uni-regensburg.de/id/eprint/38610 |
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