Spin supercurrent in superconductor/ferromagnet van-der-Waals heterostructures

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 appearance of a 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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Cited by in corpus (7)

• Gate-controlled proximity effect in superconductor/ferromagnet van der Waals heterostructures
• Magnetic proximity effect in superconductor/ferromagnet van der Waals heterostructures: dependence on the number of superconducting monolayers
• Gate-tunable nonlocal Josephson effect through magnetic van der Waals bilayers
• Proximity effect and p-wave superconductivity in s-wave superconductor/helimagnet heterostructures
• Triplet correlations in superconductor/antiferromagnet heterostructures: dependence on type of antiferromagnetic ordering
• Gate-Tunable Superconducting Spin Valve in a van der Waals Ferromagnet/Superconductor/Ferromagnet Trilayer
• AC/DC spin current in ferromagnet/superconductor/normal metal trilayer systems