Spin polarization and orbital effects in superconductor-ferromagnet structures

Abstract

We study theoretically spontaneous currents and magnetic field induced in a superconductor-ferromagnet (S-F) bilayer due to direct and inverse proximity effects. The induced currents {are Meissner currents that appear even in the absence of an external magnetic field due to the magnetic moment in the ferromagnet }and {to the magnetization } in the superconductor . The latter is induced by the inverse proximity effect over a distance of the order of the superconducting correlation length ${\xi }_S$. On the other hand the magnetic induction $B$, caused by Meissner currents, penetrates the S film over the London length ${\lambda }_S$. Even though ${\lambda }_S$ usually exceeds considerably the correlation length, the amplitude and sign of $B$ at distances much larger than ${\xi }_S$ depends crucially on the strength of the exchange energy in the ferromagnet and on the magnetic moment induced in the in the S layer.

12 pages, 3 figures

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Cited by in corpus (15)

• Magnetization dynamics in proximity-coupled superconductor/ferromagnet/superconductor multilayers
• Approaching to the deep-strong photon-to-magnon coupling
• Interfacial Dzyaloshinskii-Moriya Interaction of Antiferromagnetic Materials
• Meissner Currents Induced by Topological Magnetic Textures in Hybrid Superconductor/Ferromagnet Structures
• First Principles Calculation of Dzyaloshinskii-Moriya Interaction: A Green's function Approach
• Phase-dependent Spin Polarization of Cooper Pairs in Magnetic Josephson Junctions
• Giant demagnetization effects induced by superconducting films
• Nanoscale spin ordering and spin screening effects in tunnel ferromagnetic Josephson junctions
• Inverse Proximity Effects at Spin-Triplet Superconductor-Ferromagnet Interface
• Spectroscopic and optical response of odd-frequency superconductors
• Reentrant proximity-induced superconductivity for GeTe semimetal
• Giant electromagnetic proximity effect in superconductor/ferromagnet superlattices
• Absence of magnetic interactions in Ni-Nb ferromagnet-superconductor bilayers
• Evidence of the inverse proximity effect in tunnel magnetic Josephson Junctions
• Proximity Induced Non-collinear Magnetic States in Planar Superconductor/Ferromagnet Hybrids