φ-State and Inverted Fraunhofer Pattern in Nonaligned Josephson Junctions

Abstract

A generic nonaligned Josephson junction in the presence of an external magnetic field is theoretically considered and an unusual flux-dependent current-phase relation (CPR) is revealed. We explain the origin of the anomalous CPR via the current density flow induced by the external field within a two-dimensional quasiclassical Keldysh-Usadel framework. In particular, it is demonstrated that nonaligned Josephson junctions can be utilized to obtain a ground-state other than 0 and π, corresponding to a so-called φ-junction, which is tunable via the external magnetic flux. Furthermore, we show that the standard Fraunhofer central peak of the critical supercurrent may be inverted into a local minimum solely due to geometrical factors in planar junctions. This yields good consistency with a recent experimental measurement displaying such type of puzzling feature [R. S. Keizer et al, Nature 439, 825 (2006)].

arXiv comment5 pages, 4 figures. To Appear in Physical Review B: Rapid Communications

References in corpus (23)

• A spin triplet supercurrent through the half-metallic ferromagnet CrO2
• Direct coupling between magnetism and superconducting current in Josephson Phi junction
• Periodic alternating $0,\pi$-junction structures as realization of $\varphi$-Josephson junctions
• Experimental evidence of a ϕ Josephson junction
• Proximity DC squids in the long junction limit
• Critical Current Behavior in Josephson Junctions with the Weak Ferromagnet PdNi
• Magnetic Interference Patterns and Vortices in Diffusive SNS junctions
• Josephson junction with magnetic-field tunable ground state
• Coherent transport and nonlocality in mesoscopic SNS junctions: anomalous magnetic interference patterns
• Spin-triplet Supercurrent through Inhomogeneous Ferromagnetic Trilayers
• Magnetic-coupling-dependent spin-triplet supercurrents in helimagnet/ferromagnet Josephson junctions
• Josephson Junctions with a synthetic antiferromagnetic interlayer
• Josephson $\phi$-junctions based on structures with complex normal/ferromagnet bilayer
• Nonlocality in mesoscopic Josephson junctions with strip geometry
• Nonequilibrium transport in mesoscopic multi-terminal SNS Josephson junctions
• Reentrant superconductivity in conical-ferromagnet/superconductor nanostructures
• Area-dependence of spin-triplet supercurrent in ferromagnetic Josephson junctions
• Proximity Effects in Conical-Ferromagnet/Superconductor bilayers
• Anharmonic Josephson current in junctions with an interface pair breaking
• Non-Fraunhofer Interference Pattern in Inhomogeneous Ferromagnetic Josephson Junctions
• Magnetic interference pattern in planar SNS Josephson junctions
• Non-Fraunhofer patterns of the anharmonic Josephson current influenced by a strong interfacial pair breaking
• Magnetic interference patterns in superconducting junctions: Effects of anharmonic current-phase relations

Cited by in corpus (37)

• Josephson ${\phi }_0$-junction in nanowire quantum dots
• A phenomenological theory of superconductor diodes
• General theory of Josephson Diodes
• Anomalous Josephson current, incipient time-reversal symmetry breaking, and Majorana bound states in interacting multi-level dots
• Magnetoelectrics in Disordered Topological Insulator Josephson Junctions
• Anomalous current in diffusive ferromagnetic Josephson junctions
• Spin Supercurrent, Magnetization Dynamics, and Phi-State in Spin-Textured Josephson Junctions
• $\phi$ Josephson junction induced by altermagnetism
• Spontaneous supercurrent and $\varphi$0 phase shift parallel to magnetized topological insulator interfaces
• Effects of spin-orbit coupling and spatial symmetries on the Josephson current in SNS junctions
• Quasiclassical theory of magnetoelectric effects in superconducting heterostructures in the presence of the spin-orbit coupling
• Ferromagnetic Materials for Josephson π Junctions
• Ferromagnetic resonance and magnetic precessions in ${\phi }_0$ junction
• Proximity Induced Vortices and Long-Range Triplet Supercurrents in Ferromagnetic Josephson Junctions and Spin Valves
• Theory of supercurrent transport in SIsFS Josephson junctions
• Magnetoelectric effects in Josephson junctions
• Resistive state of SFS Josephson junctions in the presence of moving domain walls
• Detecting Topological Superconductivity with ${\phi }_0$ Josephson Junctions
• Mechanism of generation of a Josephson phase shift by an Abrikosov vortex
• Pure Odd Frequency Superconductivity at the Cores of Proximity Vortices
• Thermoelectric transport in junctions of Majorana and Dirac channels
• Electrical control of magnetization in S/F/S junctions on a 3D topological insulator
• Analytical criteria for magnetization reversal in ${\phi }_0$ Josephson junction
• Ferromagnetic planar Josephson junction with transparent interfaces: a ϕ junction proposal
• Anomalous Josephson current through a driven double quantum dot
• Geometric Josephson effects in chiral topological nanowires
• Locking of magnetization and Josephson oscillations at ferromagnetic resonance in ${\phi }_0$ junction under external radiation
• Spin-triplet superconductor$-$quantum anomalous Hall insulator$-$spin-triplet superconductor Josephson junctions: $0$-$\pi$ transition, ${\varphi }_0$ phase and switch effects
• Effective model for a short Josephson junction with a phase discontinuity
• Electrically modulated SQUID with single Josephson junction coupled by a time-reversal breaking Weyl semimetal thin film
• ${\theta }_0$ thermal Josephson junction
• Majorana phi0 Junction in a Disordered Spin-orbit Coupling Nanowire with Tilted Magnetic Field
• Kramers Fulde-Ferrell state and superconducting spin diode effect
• Spontaneous vortex state and $\phi$-junction in a superconducting bijunction with a localized spin
• Long-Range Triplet Supercurrents Induced by Singlet Supercurrents Parallel to Magnetic Interfaces
• Tunable ground states in helical $p$-wave Josephson junctions
• Josephson diodes induced by the loop current states