Please use this identifier to cite or link to this item:
Title: Size dependent suppression of spin relaxation in electrostatic quantum dots
Authors: Chaney, Darren
Maksym, P. A.
First Published: 17-Jan-2007
Publisher: American Physical Society
Citation: Physical Review B, 2007, 75, pp.035323-1-035323-6
Abstract: Triplet-singlet spin relaxation in a vertical electrostatic quantum dot containing two interacting electrons is studied with a realistic model that includes the effects of finite thickness and screening. The spin relaxation mechanism is taken to be spin mixing via the part of the Dresselhaus Hamiltonian that is linear in the lateral momentum. The electron-electron interaction enhances relaxation and finite thickness suppresses it. The relaxation rate varies extremely rapidly with well width, w, approximately like 1/w^18 in zero magnetic field and 1/w^10 in a nonzero magnetic field. In addition, the rate oscillates with w and this leads to further suppression of relaxation. If w is sufficiently large the linear spin mixing mechanism is suppressed to the extent that it is no longer dominant.
DOI Link: 10.1103/PhysRevB.75.035323
ISSN: 1098-0121
eISSN: 1550-235X
Type: Article
Rights: Archived with reference to SHERPA/RoMEO and publisher website.
Appears in Collections:Published Articles, Dept. of Physics and Astronomy

Files in This Item:
File Description SizeFormat 
PhysRevB.75.035323.pdfPublisher version114.02 kBAdobe PDFView/Open

Items in LRA are protected by copyright, with all rights reserved, unless otherwise indicated.