Physics – Condensed Matter – Mesoscale and Nanoscale Physics
Scientific paper
2003-05-28
Phys. Rev. B 69, 085306 (2004)
Physics
Condensed Matter
Mesoscale and Nanoscale Physics
7 pages, 7 figures
Scientific paper
10.1103/PhysRevB.69.085306
Extending a previous work on spin precession in GaAs/AlGaAs quantum dots with spin-orbit coupling, we study the role of deformation in the external confinement. Small elliptical deformations are enough to alter the precessional characteristics at low magnetic fields. We obtain approximate expressions for the modified $g$ factor including weak Rashba and Dresselhaus spin-orbit terms. For more intense couplings numerical calculations are performed. We also study the influence of the magnetic field orientation on the spin splitting and the related anisotropy of the $g$ factor. Using realistic spin-orbit strengths our model calculations can reproduce the experimental spin-splittings reported by Hanson et al. (cond-mat/0303139) for a one-electron dot. For dots containing more electrons, Coulomb interaction effects are estimated within the local-spin-density approximation, showing that many features of the non-iteracting system are qualitatively preserved.
Puente Antonio
Serra Llorens
Valin-Rodriguez Manuel
No associations
LandOfFree
Spin splitting and precession in quantum dots with spin-orbit coupling: the role of spatial deformation does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Spin splitting and precession in quantum dots with spin-orbit coupling: the role of spatial deformation, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Spin splitting and precession in quantum dots with spin-orbit coupling: the role of spatial deformation will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-648736