Raith, Martin and Pangerl, Thomas and Stano, Peter and Fabian, Jaroslav (2014) Spin hot spots in single-electron GaAs-based quantum dots. PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS, 251 (9). pp. 1924-1930. ISSN 0370-1972, 1521-3951
Full text not available from this repository. (Request a copy)Abstract
Spin relaxation of a single electron in a weakly coupled double quantum dot is calculated numerically. The phonon-assisted spin flip is allowed by the presence of the linear and cubic spin-orbit couplings and nuclear spins. The rate is calculated as a function of the interdot coupling, the magnetic field strength and orientation, and the dot bias. In an in-plane magnetic field, the rate is strongly anisotropic with respect to the magnetic field orientation, due to the anisotropy of the spin-orbit interactions. The nuclear spin influence is negligible. In an out-of-plane field, the nuclear spins play a more important role due selection rules imposed on the spin-orbit couplings. Our theory shows a very good agreement with data measured by Srinivasa et al. [Phys. Rev. Lett. 110, 196803 (2013)], allowing us to extract information on the linear spin-orbit interactions strengths in that experiment. We estimate that they correspond to spin-orbit lengths of about 5-15 mu m.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | CONDUCTION ELECTRONS; RELAXATION; SPINTRONICS; DYNAMICS; electron spin relaxation; nuclear spins; quantum dots; spin-orbit interaction; spin qubit |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Theroretical Physics > Chair Professor Richter > Group Jaroslav Fabian |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 27 Aug 2019 13:11 |
| Last Modified: | 27 Aug 2019 13:11 |
| URI: | https://pred.uni-regensburg.de/id/eprint/9642 |
Actions (login required)
 |
View Item |
