Physics – Condensed Matter – Mesoscale and Nanoscale Physics
Scientific paper
2001-08-29
Phys. Rev. B 65 (2002) 094517
Physics
Condensed Matter
Mesoscale and Nanoscale Physics
7 pages
Scientific paper
10.1103/PhysRevB.65.094517
We calculate the current and the spin-torque in small symmetric double tunnel barrier ferromagnet - superconductor - ferromagnet (F-S-F) systems. Spin-accumulation on the superconductor governs the transport properties when the spin-flip relaxation time is longer than the transport dwell time. In the elastic transport regime, it is demonstrated that the relative change in the current (spin-torque) for F-S-F systems equals the relative change in the current (spin-torque) for F-N-F systems upon changing the relative magnetization direction of the two ferromagnets. This differs from the results in the inelastic transport regime where spin-accumulation suppresses the superconducting gap and dramatically changes the magnetoresistance [S. Takahashi, H. Imamura, and S. Maekawa, Phys. Rev. Lett. 82, 3911 (1999)]. The experimental relevance of the elastic and inelastic transport regimes, respectively, as well as the reasons for the change in the transport properties are discussed.
Brataas Arne
Tserkovnyak Yaroslav
No associations
LandOfFree
Current and Spin-Torque in Double Tunnel Barrier Ferromagnet - Superconductor - Ferromagnet Systems 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 Current and Spin-Torque in Double Tunnel Barrier Ferromagnet - Superconductor - Ferromagnet Systems, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Current and Spin-Torque in Double Tunnel Barrier Ferromagnet - Superconductor - Ferromagnet Systems will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-481511