Magnetoelectrics in Disordered Topological Insulator Josephson Junctions

Abstract

We theoretically study the coupling of electric charge and spin polarization in an equilibrium and nonequilibrium electric transport across a two dimensional Josephson configuration comprised of disordered surface channels of a three dimensional topological insulator. In the equilibriun state of the system we predict the Edelstein effect, which is much more pronounced than its counterpart in conventional spin orbit coupled materials. Employing a quasiclassical Keldysh technique, we demonstrate that the ground state of system can be experimentally shifted into arbitrary macroscopic superconducting phase differences other than the standard `$0$' or `$\pi$', constituting a ${\varphi }_0$-junction, solely by modulating a quasiparticle flow injection into the junction. We propose a feasible experiment where the quasiparticles are injected into the topological insulator surface by means of a normal electrode and voltage gradient so that oppositely oriented stationary spin densities can be developed along the interfaces and allow for directly making use of the spin-momentum locking nature of Dirac fermions in the surface channels. The ${\varphi }_0$-state is proportional to the voltage difference applied between the injector electrode and superconducting terminals that calibrates the injection rate of particles and, therefore, the ${\varphi }_0$ shift.

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• General theory of Josephson Diodes
• Spin-Orbit induced phase-shift in Bi${}_2$Se${}_3$ Josephson junctions
• Transport in two-dimensional topological materials: recent developments in experiment and theory
• Anomalous current in diffusive ferromagnetic Josephson junctions
• Hybrid helical state and superconducting diode effect in S/F/TI heterostructures
• Supercurrent Diode Effect, Spin Torques, and Robust Zero-Energy Peak in Planar Half-Metallic Trilayers
• Field-free anomalous junction and superconducting diode effect in spin split superconductor/topological insulator junctions
• Spontaneous supercurrent and $\varphi$0 phase shift parallel to magnetized topological insulator interfaces
• Strain-engineered Majorana Zero Energy Modes and ϕ0 Josephson State in Black Phosphorus
• Quasiclassical theory of magnetoelectric effects in superconducting heterostructures in the presence of the spin-orbit coupling
• Critical supercurrent and ${\varphi }_0$ state for probing a persistent spin helix
• Anomalous Josephson Effect in S/SO/F/S heterostructures
• Generalized quasiclassical theory of the long-range proximity effect and spontaneous currents in superconducting heterostructures with strong ferromagnets
• Magnetoelectric effects in Josephson junctions
• Resistive state of SFS Josephson junctions in the presence of moving domain walls
• Self-biased current, magnetic interference response, and superconducting vortices in tilted Weyl semimetals with disorder
• Fraunhofer response and supercurrent spin switching in black phosphorus with strain and disorder
• Supercurrent diode effect in thin film Nb tracks
• Thermoelectric transport in junctions of Majorana and Dirac channels
• Electrical control of magnetization in S/F/S junctions on a 3D topological insulator
• Evolution of Pair Correlation Symmetries and Supercurrent Reversal in Tilted Weyl Semimetals
• Quasiclassical theory for the superconducting proximity effect in Dirac materials
• Impurity scattering on the surface of topological insulator thin films
• Spin supercurrent in two-dimensional superconductors with Rashba spin-orbit interaction
• Charge transport through spin-polarized tunnel junction between two spin-split superconductors
• Magnetization reversal in S/F/S Josephson junctions on a 3D topological insulator
• Chirality selective spin interactions mediated by the superconducting current
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• Majorana dc Josephson current mediated by a quantum dot
• Supercurrent Induced Charge-Spin Conversion in Spin-Split Superconductors
• Supercurrent generation by spin injection in an s-wave superconductor-Rashba metal bilayer
• Proximity-induced equilibrium supercurrent and perfect superconducting diode effect due to band asymmetry
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• Reentrant superconductivity in proximity to a topological insulator
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• Non-exponential long-range interaction of magnetic impurities in spin-orbit coupled superconductors
• Probing the magnetoelectric effect in noncentrosymmetric superconductors by equal-spin Andreev tunneling
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• Fraunhofer oscillations of the critical current at a varying Zeeman field in a spin-orbit coupled Josephson junction
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• Dynamics of impurity in the environment of Dirac fermions
• Theory of Josephson Current on a Magnetically Doped Topological Insulator
• Josephson diodes induced by the loop current states
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• A Green's function approach to Topological Insulator junctions with magnetic and superconducting regions
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• Hybrid collective excitations in topological superconductor/ferromagnetic insulator heterostructures