Long-range triplet supercurrents induced by singlet supercurrents parallel to magnetic interfaces

Journal Article · Mon Nov 17 00:00:00 EST 2014 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.4898205· OSTI ID:22392021

Alidoust, Mohammad ^[1]; Halterman, Klaus ^[2]

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1. Department of Physics, University of Basel, Klingelbergstrasse 82, CH-4056 Basel (Switzerland)
2. Michelson Lab, Physics Division, Naval Air Warfare Center, China Lake, California 93555 (United States)

Employing a spin-parameterized Keldysh-Usadel technique for the diffusive regime, we demonstrate that even in the low proximity limit, considerable long-ranged triplet supercurrents can be effectively generated by spin-singlet supercurrents flowing parallel to the interfaces of uniform double ferromagnet interlayers with noncollinear exchange fields independent of actual junction geometry. The triplet supercurrents are found to be most pronounced when the thicknesses of the ferromagnet strips are unequal. To experimentally verify this generic phenomenon, we propose an accessible and controllable structure that can fully isolate the long-range triplet effects.

• OSTI ID: 22392021
• Journal Information: Applied Physics Letters, Vol. 105, Issue 20; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
FERROMAGNETIC MATERIALS
INTERFACES
LAYERS
SPIN
SUPERCONDUCTING JUNCTIONS
THICKNESS
TRIPLETS