Spin supercurrent in superconductor/ferromagnet van der Waals heterostructures

G. A. Bobkov; A. M. Bobkov; I. V. Bobkova

doi:10.1103/PhysRevB.110.104506

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Spin supercurrent in superconductor/ferromagnet van der Waals heterostructures

G. A. Bobkov, A. M. Bobkov, I. V. Bobkova

DOI 10.1103/PhysRevB.110.104506 · Physical Review B

T1

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Abstract

We study dissipationless spin transport induced by a charge supercurrent in a monolayer van der Waals superconductor under the applied magnetic field and in a bilayer superconductor/ferromagnet (S/F) heterostructure with no external field. It is shown that in both cases a combined action of the Ising-type spin-orbit coupling and the Zeeman field results in the appearance of nonunitary superconducting triplet correlations with nonzero average Cooper pair spin, which carry spin current in the presence of a condensate motion. Properties of this dissipationless spin current are investigated. In particular, it is shown that it manifests a rectification effect. In addition, in S/F heterostructures the amplitude and the sign of the spin current are controlled by gating.

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Formula	Reported Tc (K)	Pressure (GPa)	Type
NbSe2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown