Kowalik-Seidl, K. and Voegele, X. P. and Seilmeier, F. and Schuh, D. and Wegscheider, W. and Holleitner, A. W. and Kotthaus, J. P. (2011) Forming and confining of dipolar excitons by quantizing magnetic fields. PHYSICAL REVIEW B, 83 (8): 081307. ISSN 1098-0121, 1550-235X
Full text not available from this repository. (Request a copy)Abstract
We show that a magnetic field perpendicular to an AlGaAs/GaAs coupled quantum well efficiently traps dipolar excitons and leads to the stabilization of the excitonic formation and confinement in the illumination area. Hereby, the density of dipolar excitons is remarkably enhanced up to similar to 10(11) cm(-2). By means of Landau level spectroscopy we study the density of excess holes in the illuminated region. Depending on the excitation power and the applied electric field, the hole density can be tuned over one order of magnitude up to similar to 2.5 x 10(11) cm(-2)-a value comparable with typical carrier densities in modulation-doped structures.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | COUPLED QUANTUM-WELLS; BOSE-EINSTEIN CONDENSATION; TRAPS; SHIFT; DOTS; |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Experimental and Applied Physics > Chair Professor Huber > Group Rupert Huber |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 25 Jun 2020 13:21 |
| Last Modified: | 25 Jun 2020 13:21 |
| URI: | https://pred.uni-regensburg.de/id/eprint/21265 |
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