Magnetoexcitons in quantum-ring structures: a novel magnetic interference effect

✍ Scribed by S.E Ulloa; A.O Govorov; A.V Kalameitsev; R Warburton; K Karrai

• Book ID: 104427756
• Publisher: Elsevier Science
• Year: 2002
• Tongue: English
• Weight: 103 KB
• Volume: 12
• Category: Article
• ISSN: 1386-9477
• DOI: 10.1016/s1386-9477(01)00424-6

✦ Synopsis

A novel magnetic interference e ect is proposed for a neutral, but polarizable exciton in a quantum ring with a ÿnite width. The magnetic interference e ect originates from the nonzero dipole moment in the exciton. The ground state of exciton acquires a nonzero angular momentum with increasing normal magnetic ÿeld. This leads to the suppression of the photoluminescence in deÿned windows of the magnetic ÿeld.