Synergy of exchange bias with superconductivity in ferromagnetic-superconducting layered hybrids: the influence of in-plane and out-of-plane magnetic order on superconductivity

Abstract

It is generally believed that superconductivity and magnetism are two antagonistic long-range phenomena. However, as it was preliminarily highlighted in D. Stamopoulos et al. [Phys. Rev. B 75, 014501 (2007)] and extensively studied in this work under specific circumstances these phenomena instead of being detrimental to each other may even become cooperative so that their synergy may promote the superconducting properties of a hybrid structure. Here, we have studied systematically the magnetic and transport behavior of such exchange biased hybrids that are comprised of ferromagnetic (FM) Ni80Fe20 and low-Tc superconducting (SC) Nb for the case where the magnetic field is applied parallel to the specimens. Two structures have been studied: FM-SC-FM trilayers (TLs) and FM-SC bilayers (BLs). Detailed magnetization data on the longitudinal and transverse magnetic components are presented for both the normal and superconducting states. These data are compared to systematic transport measurements including I-V characteristics. The comparison of the exchange biased BLs and TLs that are studied here with the plain ones studied in D. Stamopoulos et al. [Phys. Rev. B 75, 184504 (2007)] enable us to reveal an underlying parameter that may falsify the interpretation of the transport properties of relevant FM-SC-FM TLs and FM-SC BLs investigated in the recent literature: the underlying mechanism motivating the extreme magnetoresistance peaks in the TLs relates to the suppression of superconductivity mainly due to the magnetic coupling of the two FM layers as the out-of-plane rotation of their magnetizations takes place across the coercive field where stray fields emerge in their whole surface owing to the multidomain magnetic state that they acquire.

arXiv comment20 pages, 20 figures

References in corpus (24)

• Proximity effects in superconductor-ferromagnet heterostructures
• Long-range effects in superconductor-ferromagnet structures
• Theory of Half Metal-Superconductor Heterostructures
• Odd triplet superconductivity in superconductor/ferromagnet multilayered structures
• Magnetization-dependent $T_c$ shift in F/S/F trilayers with a strong ferromagnet
• Symmetries of Pairing Correlations in Superconductor-Ferromagnet Nanostructures
• Induced Ferromagnetism due to Superconductivity in Superconductor-Ferromagnet structures
• Enhancement of the superconducting transition temperature in Nb/Permalloy bilayers by controlling the domain state of the ferromagnet
• Inverse spin switch effects in Ferromagnet / Superconductor hybrids with strong ferromagnets
• Domain wall superconductivity in hybrid superconductor -- ferromagnetic structures
• Interplay of Magnetic and Superconducting Proximity Effects in FSF Trilayers
• Effect of an inhomogeneous exchange field on the proximity effect in disordered superconductor-ferromagnet hybrid structures
• Observation of standard spin-switch effects in F/S/F trilayers with a strong ferromagnet
• Switching superconductivity in S/F bilayers by multiple-domain structures
• Stray-fields-based magnetoresistance mechanism in Ni80Fe20-Nb-Ni80Fe20 trilayers
• Domain wall superconductivity in superconductor/ferromagnet bilayers
• Proximity Effect and Spontaneous Vortex Phase in Planar SF-Structures
• Flux-flow induced giant magnetoresistance in all-amorphous superconductor-ferromagnet hybrids
• Ferromagnetic-superconducting hybrid films and their possible applications: A direct study in a model combinatorial film
• Effective ferromagnetic coupling between a superconductor and a ferromagnet in LaCaMnO/Nb hybrids
• Phase Diagrams of Ferromagnet-Superconductor Multilayers with Misaligned Exchange Fields
• Manipulating superconductivity through the domain structure of a ferromagnet: experimental aspects and theoretical implications
• Enhanced superconducting proximity effect in clean ferromagnetic domain structures
• Spin-dependent localized Hartree-Fock density-functional approach for the accurate treatment of inner-shell excitation of close-shell atoms

Cited by in corpus (7)

• Observation of the Triplet Spin-Valve Effect in a Superconductor-Ferromagnet Heterostructure
• Memory Effect and Triplet Pairing Generation in the Superconducting Exchange Biased Co/CoOx/Cu41Ni59/Nb/Cu41Ni59 Layered Heterostructure
• In search for the superconducting spin-switch: Magnetization induced resistance switching effects in La${}_{0.67}$Sr${}_{0.33}$MnO${}_3$/YBa${}_2$Cu${}_3$O${}_{7-\delta }$ bi- and trilayers
• Effect of Interface Induced Exchange Fields on Cuprate-Manganite Spin Switches
• Penetration depth of Cooper pairs in the IrMn antiferromagnet
• Reentrant Superconductivity and Superconducting Critical Temperature Oscillations in F/S/F trilayers of Cu41Ni59/Nb/Cu41Ni59 Grown on Cobalt Oxide
• Dimensional Crossover of Microscopic Magnetic Metasurfaces for Magnetic Field Amplification