Physics – Condensed Matter – Mesoscale and Nanoscale Physics
Scientific paper
2012-04-26
Condens. Matter Phys., Vol. 15, No. 1, 13701: 1-7 (2012)
Physics
Condensed Matter
Mesoscale and Nanoscale Physics
7 pages, 3 figures
Scientific paper
10.5488/CMP.15.13701
The ballistic spin-filter effect from a ferromagnetic metal into a semiconductor has theoretically been studied with an intention of detecting the spin polarizability of density of states in FM layer at a higher energy level. The physical model for the ballistic spin filtering across the interface between ferromagnetic metals and semiconductor superlattice is developed by exciting the spin polarized electrons into n-type AlAs/GaAs superlattice layer at a much higher energy level and then ballistically tunneling through the barrier into the ferromagnetic film. Since both the helicity-modulated and static photocurrent responses are experimentally measurable quantities, the physical quantity of interest, the relative asymmetry of spin-polarized tunneling conductance, could be extracted experimentally in a more straightforward way, as compared with previous models. The present physical model serves guidance for studying spin detection with advanced performance in the future.
No associations
LandOfFree
Ballistic spin filtering across the ferromagnetic-semiconductor interface 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 Ballistic spin filtering across the ferromagnetic-semiconductor interface, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Ballistic spin filtering across the ferromagnetic-semiconductor interface will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-313637