Wagner, H., Langbein, Wolfgang Werner ORCID: https://orcid.org/0000-0001-9786-1023, Hvam, J., Bacher, G., Kümmell, T. and Forchel, A. 1998. Exciton dephasing in ZnSe quantum wires. Physical Review B 57 (3) , pp. 1797-1800. 10.1103/PhysRevB.57.1797 |
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 wire 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 |
---|---|
Date Type: | Publication |
Status: | Published |
Schools: | Physics and Astronomy |
Subjects: | Q Science > QB Astronomy |
Publisher: | American Physical Society |
ISSN: | 0163-1829 |
Last Modified: | 28 Oct 2022 08:42 |
URI: | https://orca.cardiff.ac.uk/id/eprint/71785 |
Citation Data
Cited 21 times in Scopus. View in Scopus. Powered By Scopus® Data
Actions (repository staff only)
Edit Item |