Volume 83, Number 6, September 2008
|Number of page(s)||5|
|Section||Condensed Matter: Electronic Structure, Electrical, Magnetic and Optical Properties|
|Published online||08 September 2008|
Giant optical anisotropy in cylindrical self-assembled InAs/GaAs quantum rings
Key Laboratory of Quantum Information, University of Science and Technology of China, CAS Hefei, 230026, PRC
Corresponding author: firstname.lastname@example.org
Accepted: 24 July 2008
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 InAsGaAs 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.
PACS: 73.21.La – Quantum dots / 73.22.-f – Electronic structure of nanoscale materials: clusters, nanoparticles, nanotubes, and nanocrystals / 71.35.-y – Excitons and related phenomena
© EPLA, 2008
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.