Hyperfine Interactions and Spin Transport in Ferromagnet-Semiconductor Heterostructures

Details Hyperfine Interactions and Spin Transport in Ferromagnet-Semiconductor Heterostructures Hyperfine Interactions and Spin Transport in Ferromagnet-Semiconductor Heterostructures

2009-08-31

arxiv.org/abs/0909.0048v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

Submitted to Phys. Rev. B

Scientific paper

Measurements and modeling of electron spin transport and dynamics are used to characterize hyperfine interactions in Fe/GaAs devices with $n$-GaAs channels. Ga and As nuclei are polarized by electrically injected electron spins, and the nuclear polarization is detected indirectly through the depolarization of electron spins in the hyperfine field. The dependence of the electron spin signal on injector bias and applied field direction is modeled by a coupled drift-diffusion equation, including effective fields from both the electronic and nuclear polarizations. This approach is used to determine the electron spin polarization independently of the assumptions made in standard transport measurements. The extreme sensitivity of the electron spin dynamics to the nuclear spin polarization also facilitates the electrical detection of nuclear magnetic resonance.

Affiliated with

Also associated with

No associations

Rating

Hyperfine Interactions and Spin Transport in Ferromagnet-Semiconductor Heterostructures 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 Hyperfine Interactions and Spin Transport in Ferromagnet-Semiconductor Heterostructures, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Hyperfine Interactions and Spin Transport in Ferromagnet-Semiconductor Heterostructures will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-287842