Triplet supercurrent due to spin-active zones in a Josephson junction

Jacob Linder; Asle Sudbø

doi:10.1103/PhysRevB.82.020512

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Triplet supercurrent due to spin-active zones in a Josephson junction

Jacob Linder, Asle Sudbø

DOI 10.1103/PhysRevB.82.020512 · Physical Review B

T1

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Abstract

Motivated by a recent experiment evidencing triplet superconductivity in a ferromagnetic Josephson junction with a Cu2MnAl-Heusler barrier, we construct a theoretical model accounting for this observation. The key ingredients in our model which generate the triplet supercurrent are spin-active zones, characterized by an effective canted interface magnetic moment. Using a numerical solution of the quasiclassical equations of superconductivity with spin-active boundary conditions, we find qualitatively very good agreement with the experimentally observed supercurrent. Further experimental implications of the spin-active zones are discussed.

Source-reported materials — not catalogue approval

Formula	Reported Tc (K)	Pressure (GPa)	Type
Nb Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	8	Pressure not reported	unknown