Abstract
In the presence of both spin-orbit scattering and a magnetic field the conductance of a chaotic GaAs quantum dot displays quite a rich behavior. Using a Hamiltonian derived by Aleiner and Fal'ko [Phys. Rev. Lett. 87, 256801 (2001)] we calculate the weak localization correction and the covariance of the conductance, as a function of parallel and perpendicular magnetic field and spin-orbit coupling strength. We also show how the combination of an in-plane magnetic field and spin-orbit scattering gives rise to a component to the magneto-conductance that is antisymmetric with respect to reversal of the perpendicular component of the magnetic field and how spin-orbit scattering leads to a "magnetic-field echo" in the conductance autocorrelation function. Our results can be used for a measurement of the Dresselhaus and Bychkov-Rashba spin-orbit scattering lengths in a GaAs/GaA1As heterostructure.
| Original language | English |
|---|---|
| Article number | 125329 |
| Pages (from-to) | 1253291-12532914 |
| Journal | Physical Review B - Condensed Matter and Materials Physics |
| Volume | 68 |
| Issue number | 12 |
| Publication status | Published - Sept 2003 |
Research Beacons, Institutes and Platforms
- National Graphene Institute