Controllable Josephson current through a pseudo-spin-valve structure

Abstract

A thin Co/Cu/Permalloy (Ni${}_{80}$Fe${}_{20}$) pseudo-spin-valve structure is sandwiched between superconducting Nb contacts. When the current is passed perpendicular to the plane of the film a Josephson critical current ($I_C$) is observed at 4.2 K, in addition to a magnetoresistance (MR) of $\sim$ 0.5 % at high bias. The hysteresis loop of the spin-valve structure can be cycled to modulate the zero field $I_C$ of the junction in line with the MR measurements. These modulations of resistance and $I_C$ occur both smoothly and sharply with the applied field. For each type of behaviour there is a strong correlation between shape of the MR loops and the $I_C$ modulation.

3 pages, 4 figures, (submitted to Appl. Phys. Lett.)

References in corpus (7)

• Coupling of two superconductors through a ferromagnet : evidence for a pi-junction
• Josephson current in superconductor-ferromagnet structures with a nonhomogeneous magnetization
• Oscillations of the superconducting critical current in Nb-Cu-Ni-Cu-Nb junctions
• Magnetic exchange interaction induced by a Josephson current
• Proximity and Josephson effects in superconductor - antiferromagnetic Nb / γ-Fe50Mn50 heterostructures
• The controllable pi - SQUID
• Josephson effect in S${}_{\mathrm{F}}$XS${}_{\mathrm{F}}$ junctions

Cited by in corpus (52)

• Driving phase slips in a superfluid atom circuit with a rotating weak link
• Hybrid superconducting-magnetic memory device using competing order parameters
• Controllable 0-pi Josephson junctions containing a ferromagnetic spin valve
• Beyond Moore's technologies: operation principles of a superconductor alternative
• Magnetic Josephson Junctions with Superconducting Interlayer for Cryogenic Memory
• Cryogenic Memory Technologies
• Reversible control of spin-polarised supercurrents in ferromagnetic Josephson junctions
• Critical current of a Josephson junction containing a conical magnet
• Characteristics of strong ferromagnetic Josephson junctions with epitaxial barriers
• Spin-valve Josephson junctions for cryogenic memory
• Supercurrent in ferromagnetic Josephson junctions with heavy metal interlayers
• Theory of Nonequilibrium Spin Transport and Spin Transfer Torque in Superconducting-Ferromagnetic Nanostructures
• Controllable generation of a spin-triplet supercurrent in a Josephson spin-valve
• Ferromagnetic Materials for Josephson π Junctions
• Josephson Junctions with a synthetic antiferromagnetic interlayer
• Theory of supercurrent transport in SIsFS Josephson junctions
• Superconducting Phase Domains for Memory Applications
• Josephson magnetic rotary valve
• Phase Controllable Josephson Junctions for Cryogenic Memory
• Protected 0-pi states in SIsFS junctions for Josephson memory and logic
• Superconducting Neuromorphic Computing Using Quantum Phase-Slip Junctions
• Critical Current Oscillations of Elliptical Josephson Junctions with Single-Domain Ferromagnetic Layers
• Stability of $\pi$ junction configurations in ferromagnet-superconductor heterostructures
• Supercurrent decay in ballistic magnetic Josephson junctions
• Critical Current Oscillations of Josephson Junctions Containing PdFe Nanomagnets
• Spin-valve Josephson junctions with perpendicular magnetic anisotropy for cryogenic memory
• Electrodynamics of Josephson junctions containing strong ferromagnets
• Dynamics of spin transport in voltage-biased Josephson junctions
• Spin-polarized triplet supercurrent in Josephson junctions with perpendicular ferromagnetic layers
• Stochastic single flux quantum neuromorphic computing using magnetically tunable Josephson junctions
• Generating superconducting vortices via spin-orbit coupling
• Spin-Singlet and Spin-Triplet Josephson Junctions for Cryogenic Memory
• Observation of the dominant spin-triplet supercurrent in Josephson spin valves with strong Ni ferromagnets
• Magnetization induced by odd-frequency spin-triplet Cooper pairs in a Josephson junction with metallic trilayers
• Distortions to the penetration depth and coherence length of superconductor/normal-metal superlattices
• Nanoscale spin ordering and spin screening effects in tunnel ferromagnetic Josephson junctions
• Control of superconductivity with a single ferromagnetic layer in niobium/erbium bilayers
• Ferromagnetic Josephson junctions for cryogenic memory
• Pt and CoB trilayer Josephson $\pi$ junctions with perpendicular magnetic anisotropy
• Anomalous current-voltage characteristics of SFIFS Josephson junctions with weak ferromagnetic interlayers
• Josephson current through a ferromagnetic bilayer: Beyond the quasiclassical approximation
• 0-pi transition in SFS junctions with strongly spin-dependent scattering
• The physics of superconductor-ferromagnet hybrid structures
• In situ transport characterization of magnetic states in Nb/Co superconductor/ferromagnet heterostructures
• Effect of interfaces on supercurrent through ferromagnetic materials
• Transport characterization of magnetic states in Superconductor/Ferromagnet Nb/Co multilayers
• 0-$\pi$ transition driven by magnetic proximity effect in a Josephson junction
• Spin-transfer torque switching in nanopillar superconducting-magnetic hybrid Josephson junctions
• Comparison of NiFeCr and NiFe in ferromagnetic Josephson junctions
• Enhancement of supercurrent through ferromagnetic materials by interface engineering
• Modeling the computer memory based on the ferromagnet/superconductor multilayers
• Demonstration of 0-pi transition in Josephson junctions containing unbalanced synthetic antiferromagnets