A supercurrent switch in graphene $\pi$-junctions

Abstract

We study the supercurrent in a superconductor/ferromagnet/superconductor graphene junction. In contrast to its metallic counterpart, the oscillating critical current in our setup decays only weakly upon increasing exchange field and junction width. We find an unusually large residual value of the supercurrent at the oscillatory cusps due to a strong deviation from a sinusoidal current-phase relationship. Our findings suggest a very efficient device for dissipationless supercurrent switching.

4 pages, 3 figures. High-quality figures available in published version. Accepted for publication in Phys. Rev. Lett

References in corpus (17)

• Half-Metallic Graphene Nanoribbons
• Chiral tunneling and the Klein paradox in graphene
• Electronic spin transport and spin precession in single graphene layers at room temperature
• Proximity effects in superconductor-ferromagnet heterostructures
• Odd Triplet Superconductivity and Related Phenomena in Superconductor-Ferromagnet Structures
• Bipolar supercurrent in graphene
• Coupling of two superconductors through a ferromagnet : evidence for a pi-junction
• Specular Andreev reflection in graphene
• Spin transport in proximity induced ferromagnetic graphene
• Josephson effect in ballistic graphene
• Will Zigzag Graphene Nanoribbon Turn to Half Metal under Electric Field?
• Tunneling conductance in $s$- and d-wave superconductor-graphene junctions: Extended Blonder-Tinkham-Klapwijk formalism
• Dirac-fermions and conductance-oscillations in (s,d)-wave superconductor/normal graphene junctions
• Josephson effect in graphene SBS junctions
• $\pi -0$ Transition in Superconductor-Ferromagnetic-Superconductor Junctions
• Properties of tunnel Josephson junctions with a ferromagnetic interlayer
• Nonsinusoidal current-phase relations and the $0-\pi$ transition in diffusive ferromagnetic Josephson junctions

Cited by in corpus (41)

• Electron-Electron Interactions in Graphene: Current Status and Perspectives
• Interplay between Superconductivity and Ferromagnetism on a Topological Insulator
• Quantum transport through a graphene nanoribbon-superconductor junction
• Superconducting Proximity Effect in Silicene: Spin-Valley Polarized Andreev Reflection, Non-Local Transport, and Supercurrent
• Controllable Andreev retroreflection and specular Andreev reflection in a four-terminal graphene-superconductor hybrid system
• Proximity coupling in superconductor-graphene heterostructures
• Andreev reflection in graphene nanoribbons
• Josephson current in graphene: the role of unconventional pairing symmetries
• Andreev-Klein reflection in graphene ferromagnet-superconductor junctions
• CT invariant quantum spin Hall effect in a ferromagnetic graphene
• Theory of superconducting and magnetic proximity effect in S$\mid$F structures with inhomogeneous magnetization textures and spin-active interfaces
• Spin-active interfaces and unconventional pairing in half-metal$\mid$superconductor junctions
• Anomalous magnetic transport in ferromagnetic graphene junctions
• Spin superconductor in ferromagnetic graphene
• Spin and valley transports in junctions of Dirac fermions
• Long range Josephson coupling through ferromagnetic graphene
• The role of interface transparency and spin-dependent scattering in diffusive ferromagnet/superconductor heterostructures
• Nonsinusoidal current-phase relation in strongly ferromagnetic and moderately disordered SFS junctions
• Josephson effect in S/F/S junctions: spin bandwidth asymmetry vs. Stoner exchange
• Planar graphene-NbSe${}_2$ Josephson junctions in a parallel magnetic field
• Tunable Supercurrent at the Charge Neutrality Point via Strained Graphene Junctions
• Anisotropic RKKY interaction in spin polarized graphene
• Enhanced Andreev reflection in gapped graphene
• Double Andreev reflections and double normal reflections in nodal-line semimetal-superconductor junctions
• Triplet proximity effect and odd-frequency pairing in graphene
• Anisotropic Andreev Reflection and Josephson Effect in Ballistic Phosphorene
• Spin-flip reflection at the normal metal-spin superconductor interface
• Direct and inverse superspin Hall effect in two-dimensional systems: Electrical detection of spin supercurrents
• Relativistic model for electron-hole pairing in the superconducting state of graphene-based materials
• $\pi$-junction qubit in monolayer graphene
• Supercurrent reversal in Josephson junctions based on bilayer graphene flakes
• Anomalous quantum interference effects in graphene SNS junctions due to strain-induced gauge fields
• New supercurrent pattern in quantum point contact with strained graphene nanoribbon
• Josephson coupling between superconducting islands on single and bilayer graphene
• Superconductor-ferromagnet junction phase qubit
• Effect of helical edge states on the tunneling conductance in ferromagnet/noncentrosymmetric superconductors junctions
• Revisiting Andreev processes in superconductor-graphene-superconductor (SGS) Josephson junctions: Comparison with experimental results
• Zero-phase-difference Josephson current based on spontaneous symmetry-breaking via parametric excitation of a movable superconducting dot
• Quantized multi-terminal resistances in ferromagnetic graphene p-n junctions
• Planar Hall supercurrent and δϕ-shift in the topological Josephson junction
• Magnetically modulated superconductor-graphene-superconductor (SGS) Josephson junctions and their tunability