Spin-spin coupling in electrostatically coupled quantum dots

Details Spin-spin coupling in electrostatically coupled quantum dots Spin-spin coupling in electrostatically coupled quantum dots

2006-08-23

arxiv.org/abs/cond-mat/0608512v1

Phys. Rev. B 75, 085307 (2007)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

14 pages, 7 figures

Scientific paper

10.1103/PhysRevB.75.085307

We study the spin-spin coupling between two single-electron quantum dots due to the Coulomb and spin-orbit interactions, in the absence of tunneling between the dots. We find an anisotropic XY spin-spin interaction that is proportional to the Zeeman splitting produced by the external magnetic field. This interaction is studied both in the limit of weak and strong Coulomb repulsion with respect to the level spacing of the dot. The interaction is found to be a non-monotonic function of inter-dot distance $a_0$ and external magnetic field, and, moreover, vanishes for some special values of $a_0$ and/or magnetic field orientation. This mechanism thus provides a new way to generate and tune spin interaction between quantum dots. We propose a scheme to measure this spin-spin interaction based on the spin-relaxation-measurement technique.

Affiliated with

Also associated with

No associations

Rating

Spin-spin coupling in electrostatically coupled quantum dots 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-spin coupling in electrostatically coupled quantum dots, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Spin-spin coupling in electrostatically coupled quantum dots will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-109737