Skip to content.

TUD

search  |  internal  |  deutsch
Personal tools
TU Dresden » Faculty of Mechanical Science and Engineering » Institute for Materials Science » Chair of Materials Science and Nanotechnology



Wednesday, 31 May 2006
(at 10:15 in room Phy 4.1.13)
Add to your Google Calendar


Electron relaxation in single and coupled quantum dots

Peter Stano

Institut für Theoretische Physik
Universität Regensburg
  Germany  






I will present our results on phonon-induced orbital and spin relaxation rates of single electron states in lateral single and double quantum dots. The rates are calculated as a function of magnetic field and interdot coupling, at various field and quantum dot orientations. We find that besides the anisotropy of the rates (dependence on the orientation of the magnetic field) known from the single dot case, there is an additional much stronger anisotropy of different origin in the double dot case. This new anisotropy is due to the anticrossing induced by the spin-orbit interactions and can be exploited to measure the linear spin-orbit couplings. We find configurations where the anticrossing influence on the spin relaxation rate is turned off enabling long lifetime of a spin qubit.



slides (pdf)

related paper (html)

Invited by J. Fabian (Wednesday seminar)

last modified: 2019.01.18 Fr
author: webadmin

contact
Prof. Dr. Gianaurelio Cuniberti
secretariat:
Ms Sylvi Katzarow
phone: +49 (0)351 463-31420
fax: +49 (0)351 463-31422
office@nano.tu-dresden.de
postal address:
Institute for Materials Science
TU Dresden
01062 Dresden, Germany
visitors and courier address:
HAL building
TU Dresden
Hallwachsstr. 3
01069 Dresden, Germany
Max Bergmann Center
TU Dresden
Budapester Str. 27
01069 Dresden, Germany