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.
@article{arxiv.2407.01319,
title = {Spin supercurrent in superconductor/ferromagnet van-der-Waals heterostructures},
author = {G. A. Bobkov and A. M. Bobkov and I. V. Bobkova},
journal= {arXiv preprint arXiv:2407.01319},
year = {2024}
}