2008/05/14 by Weiwei Zhang, Zhiqiang Su, Ming Gong +3
Engineering · Physics and Astronomy · #Nanowire Synthesis and Applications #Quantum and electron transport phenomena #Semiconductor Quantum Structures and Devices #cond-mat.mtrl-sci
paper · pdf · doi:10.1209/0295-5075/83/67004
arxiv created 2008/05/14 · openalex publication_date 2008/09/01 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/04
Using a single-particle atomistic pseudopotential method followed by a configuration interaction treatment to many-particle interactions, we investigate the geometry, electronic structures and optical transitions of a self-assembled InAs/GaAs quantum ring (QR), with its shape changing continuously from a lens-shaped quantum dot (QD) to a nearly one-dimensional ring. We find that the biaxial strain inside the ring is strongly asymmetric in the plane perpendicular to the QR growth direction, leading to a giant optical anisotropy.