Broocks, K.-B. and Schroeter, P. and Heitmann, D. and Heyn, Ch. and Schueller, C. and Bichler, M. and Wegscheider, Werner (2002) Anomalous dispersion of charged excitons in dilute two-dimensional electron systems at low temperatures. PHYSICAL REVIEW B, 66 (4): 041309. ISSN 1098-0121
Full text not available from this repository.Abstract
We report the observation of a strong anomaly in the magnetic-field dispersion of negatively charged excitons in dilute two-dimensional electron systems. The anomaly exists in an intermediate density range around 1x10(11) cm(-2), and at temperatures T<1 K, only. The strength of the anomaly at T=0.1 K is about 2.5 meV, and the most striking feature is that it can be completely destroyed by a small thermal energy of about 0.2 meV (2 K). Furthermore, the anomaly is observed both in photoluminescence and direct absorption measurements, which gives a strong indication that it is of intrinsic origin.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | HIGH MAGNETIC-FIELDS; GAAS QUANTUM-WELLS; MAGNETOEXCITONS; STATES; GAS; PHOTOLUMINESCENCE; SPECTROSCOPY; INTEGER; |
| 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: | 12 Oct 2021 10:48 |
| Last Modified: | 12 Oct 2021 10:48 |
| URI: | https://pred.uni-regensburg.de/id/eprint/40081 |
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