Theory of Half Metal-Superconductor Heterostructures

Details Theory of Half Metal-Superconductor Heterostructures Theory of Half Metal-Superconductor Heterostructures

2002-06-14

arxiv.org/abs/cond-mat/0206278v2

Phys. Rev. Lett. 90, 137003 (2003) and Virtual Journal of Applications of Superconductivity, Vol. 4, Issue 8 (2003)

Physics

Condensed Matter

Superconductivity

replaced with published version

Scientific paper

10.1103/PhysRevLett.90.137003

We investigate the coupling between two singlet superconductors separated by a half-metallic magnet. The mechanism behind the coupling is provided by the rotation of the quasiparticle spin in the superconductor during reflection events at the interface with the half metal. Spin rotation induces triplet correlations in the superconductor which, in the presence of surface spin-flip scattering, result in an indirect Josephson effect between the superconductors. We present a theory appropriate for studying this phenomenon and calculate physical properties for a superconductor/half metal/superconductor (S/HM/S) heterostructure.

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