Volume 84, Number 5, December 2008
|Number of page(s)||5|
|Section||Condensed Matter: Electronic Structure, Electrical, Magnetic and Optical Properties|
|Published online||10 December 2008|
Proximity-effect–assisted decay of spin currents in superconductors
Department of Physics, Norwegian University of Science and Technology - NO-7491 Trondheim, Norway
2 Centre for Advanced Study at the Norwegian Academy of Science and Letters Drammensveien 78, NO-0271 Oslo, Norway
3 Kavli Institute of NanoScience, Delft University of Technology - 2628 CJ Delft, The Netherlands, EU
4 Department of Physics, University of Konstanz - D-78457 Konstanz, Germany, EU
5 Department of Physics and Astronomy, University of California - Los Angeles, CA 90095, USA
Corresponding author: email@example.com
Accepted: 28 October 2008
The injection of pure spin current into superconductors by the dynamics of a ferromagnetic contact is studied theoretically. Taking into account the suppression of the order parameter at the interfaces (inverse proximity effect) and the energy-dependence of spin-flip scattering, we determine the temperature-dependent ferromagnetic resonance linewidth broadening. Our results compare well with recent experiments in Nb|permalloy bilayers (Bell C. et al., Phys. Rev. Lett., 100 (2008) 047002).
PACS: 74.25.Fy – Transport properties (electric and thermal conductivity, thermoelectric effects, etc.) / 74.78.Na – Mesoscopic and nanoscale systems / 85.75.-d – Magnetoelectronics; spintronics: devices exploiting spin polarized transport or integrated magnetic fields
© EPLA, 2008
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