Large size self-assembled quantum rings : quantum size effect and modulation on the surface diffusion

• Main Authors: Wang, Lijun, Tong, Cunzhu, Yoon, Soon Fatt
• Other Authors: School of Electrical and Electronic Engineering
• Format: Article
• Language: English
• Published: 2014
• Subjects: DRNTU::Engineering::Electrical and electronic engineering
• Online Access: https://hdl.handle.net/10356/101639; http://hdl.handle.net/10220/18688
• Institution: Nanyang Technological University

We demonstrate experimentally the submicron size self-assembled (SA) GaAs quantum rings (QRs) by quantum size effect (QSE). An ultrathin In0.1 Ga0.9As layer with different thickness is deposited on the GaAs to modulate the surface nucleus diffusion barrier, and then the SA QRs are grown. It is found...