Goncharuk, N. A. and Smrcka, L. and Svoboda, P. and Vasek, P. and Kucera, J. and Krupko, Yu. and Wegscheider, W. (2007) Illumination-induced changes of the Fermi surface topology in three-dimensional superlattices. PHYSICAL REVIEW B, 75 (24): 245322. ISSN 1098-0121, 1550-235X
Full text not available from this repository.Abstract
The magnetoresistance of the molecular beam epitaxy grown GaAs/Al0.3Ga0.7As superlattice with Si-doped barriers has been measured in tilted magnetic fields in the as-grown state and after brief illumination by a red-light diode at low temperature, T approximate to 0.3 K. A remarkable illumination-induced modification of magnetoresistance curves has been observed, which indicates a significant change of the superlattice Fermi surface topology. Analysis of magnetoresistance data in terms of the tight-binding model reveals that not only electron concentration and mobility have been increased by illumination, but also that the coupling among two-dimensional electron layers in neighboring quantum wells has been reduced.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | TILTED MAGNETIC-FIELDS; OSCILLATIONS; ALLOYS; |
| 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: | 04 Dec 2020 10:39 |
| Last Modified: | 04 Dec 2020 10:39 |
| URI: | https://pred.uni-regensburg.de/id/eprint/32710 |
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