Phase Diagrams of Ferromagnet-Superconductor Multilayers with Misaligned Exchange Fields

Abstract

We study the influence of misalignment of the ferromagnetic exchange field on the equilibrium properties of hybrid structures, composed of superconducting (S) and ferromagnetic (F) parts. In particular, we study numerically the superconducting critical temperature Tc in F-S-F trilayers and in F-S-F-S-F Josephson junctions as a function of the misalignment angle theta of the ferromagnetic magnetization. We discuss the corresponding phase diagrams for these hybrid structures. For the Josephson junctions, a transition between the zero-phase and the pi-phase ground state as a function of theta takes place under certain conditions. Within the quasiclassical Green's function technique in the diffusive limit, we introduce a fast and effective method for calculating Tc in such multilayer structures.

18 pages, 16 figures

References in corpus (6)

• Half-integer Shapiro steps at the 0-pi crossover of a ferromagnetic Josephson junction
• Triplet proximity effect in FSF trilayers
• Thermodynamic properties of thin films of superfluid 3He-A
• Effect of an inhomogeneous exchange field on the proximity effect in disordered superconductor-ferromagnet hybrid structures
• Switching superconductivity in S/F bilayers by multiple-domain structures
• Manipulating superconductivity through the domain structure of a ferromagnet: experimental aspects and theoretical implications

Cited by in corpus (8)

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• 0-pi Transitions in a Superconductor/Chiral Ferromagnet/Superconductor Junction induced by a Homogeneous Cycloidal Spiral
• Josephson current in diffusive multilayer superconductor/ferromagnet/superconductor junctions
• Proximity Induced Vortices and Long-Range Triplet Supercurrents in Ferromagnetic Josephson Junctions and Spin Valves
• Proximity effect in ferromagnet/superconductor hybrids: from diffusive to ballistic motion
• Synergy of exchange bias with superconductivity in ferromagnetic-superconducting layered hybrids: the influence of in-plane and out-of-plane magnetic order on superconductivity
• Width of the $0-\pi$ phase transition in diffusive magnetic Josephson junctions
• Proximity Effect in Superconducting-Ferromagnetic Granular Structures