Wagner, Hans Peter and Langbein, W. and Hvam, J. M. and Bacher, G. and Kümmell, T. and Forchel, A. (1998) Exciton dephasing in ZnSe quantum wires. PHYSICAL REVIEW B, 57 (3). pp. 1797-1800. ISSN 1098-0121, 1550-235X
Full text not available from this repository.Abstract
The homogeneous linewidths of excitons in wet-etched ZnSe quantum wires of lateral sizes down to 23 nm are studied by transient four-wave mixing. The low-density dephasing time is found to increase with decreasing wire width. This is attributed mainly to a reduction of electron-exciton scattering within the wire due to the electron trapping in surface states and exciton localization. The exciton-exciton scattering efficiency, determined by the density dependence of the exciton dephasing, is found to increase with decreasing win width. This is assigned to the reduced phase space in a quasi-one-dimensional system, enhancing the repulsive interaction between excitons due to Pauli blocking.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | FEMTOSECOND COHERENT SPECTROSCOPY; ROOM-TEMPERATURE; WELLS; RELAXATION; SEMICONDUCTORS; BEATS; SCATTERING; EMISSION; SHIFT; CDSE |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Experimental and Applied Physics |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 28 Feb 2023 10:47 |
| Last Modified: | 28 Feb 2023 10:47 |
| URI: | https://pred.uni-regensburg.de/id/eprint/50155 |
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