dc Josephson Effect in Altermagnets

Abstract

The ability of magnetic materials to modify superconducting systems is an active research area for possible applications in thermoelectricity, quantum sensing, and spintronics. We consider the fundamental properties of the Josephson effect in a third class of magnetic materials beyond ferromagnets and antiferromagnets: altermagnets. We show that despite having no net magnetization, altermagnets induce $0$-$\pi$ oscillations. The decay length and oscillation period of the Josephson coupling are qualitatively different from ferromagnetic junctions and depend on the crystallographic orientation of the altermagnet. The Josephson effect in altermagnets thus serves a dual purpose: it acts as a signature that distinguishes altermagnetism from conventional (anti)ferromagnetism and offers a way to tune the supercurrent via flow direction anisotropy.

4 pages, 4 figures

References in corpus (3)

• The Kernel Polynomial Method
• Antiferromagnetism in RuO${}_2$ as $d$-wave Pomeranchuk instability
• Chebyshev-BdG: an efficient numerical approach to inhomogeneous superconductivity

Cited by in corpus (124)

• Broken Kramers' degeneracy in altermagnetic MnTe
• Altermagnetism: Exploring New Frontiers in Magnetism and Spintronics
• Topological Superconductivity in Two-Dimensional Altermagnetic Metals
• Finite-momentum Cooper pairing in proximitized altermagnets
• Three-dimensional mapping of the altermagnetic spin splitting in CrSb
• Twisted Magnetic Van der Waals Bilayers: An Ideal Platform for Altermagnetism
• Altermagnetic Routes to Majorana Modes in Zero Net Magnetization
• Andreev reflection at the altermagnet-superconductor interface
• Two-dimensional altermagnets: Superconductivity in a minimal microscopic model
• Topological transition from nodal to nodeless Zeeman splitting in altermagnets
• Phase-shifted Andreev levels in an altermagnet Josephson junction
• Altermagnetic superconducting diode effect
• Mirror Chern Bands and Weyl Nodal Loops in Altermagnets
• Creation and Manipulation of Higher-Order Topological States by Altermagnets
• Minimal Models and Transport Properties of Unconventional $p$-Wave Magnets
• Interplay of altermagnetism and weak ferromagnetism in two-dimensional RuF${}_4$
• Non-relativistic spin splitting in compensated magnets that are not altermagnets
• Topological Weyl Altermagnetism in CrSb
• Intrinsic anomalous Hall effect in altermagnets
• Superconducting phenomena in systems with unconventional magnets
• Orientation-dependent Josephson effect in spin-singlet superconductor/altermagnet/spin-triplet superconductor junctions
• $\phi$ Josephson junction induced by altermagnetism
• Field-free Josephson diode effect in altermagnet/normal metal/altermagnet junctions
• Superconductor-altermagnet memory functionality without stray fields
• Fulde-Ferrell-Larkin-Ovchinnikov state induced by antiferromagnetic order in $\kappa$-type organic conductors
• Altermagnetism in the layered intercalated transition metal dichalcogenide CoNb${}_4$Se${}_8$
• Unconventional p-wave and finite-momentum superconductivity induced by altermagnetism through the formation of Bogoliubov Fermi surface
• Theory of Tunneling Spectroscopy in Unconventional $p$-wave Magnet-Superconductor Hybrid Structures
• Josephson effect and odd-frequency pairing in superconducting junctions with unconventional magnets
• Interplay between altermagnetism and nonsymmorphic symmetries generating large anomalous Hall conductivity by semi-Dirac points induced anticrossings
• Altermagnetism and superconductivity in a multiorbital t-J model
• Ferromagnetic Materials for Josephson π Junctions
• Coulomb Drag in Altermagnets
• Orbital-selective altermagnetism and correlation-enhanced spin-splitting in transition metal oxides
• Transport across junctions of altermagnets with normal metals and ferromagnets
• Tunable second harmornic in altermagnetic Josephson junctions
• Quasiclassical theory of superconducting spin-splitter effects and spin-filtering via altermagnets
• Staggered Dzyaloshinskii-Moriya inducing weak ferromagnetism in centrosymmetric altermagnets and weak ferrimagnetism in noncentrosymmetric altermagnets
• Crossed Andreev reflection in altermagnets
• Many-body effects on superconductivity mediated by double-magnon processes in altermagnets
• Classification of pair symmetries in superconductors with unconventional magnetism
• Unconventional superconductivity in altermagnets with spin-orbit coupling
• RKKY interaction in Rashba altermagnets
• Design of altermagnetic models from spin clusters
• G-type Antiferromagnetic BiFeO${}_3$ is a Multiferroic $g$-wave Altermagnet
• Topological responses from gapped Weyl points in 2D altermagnets
• Nonlinear Superconducting Magnetoelectric Effect
• Spin Splitting Nernst Effect in Altermagnet
• Pair Density Waves and Supercurrent Diode Effect in Altermagnets
• Altermagnetism-Induced Parity Anomaly in Weak Topological Insulators
• Spin-polarized Specular Andreev Reflections in Altermagnets
• Orientation-dependent transport in junctions formed by $d$-wave altermagnets and $d$-wave superconductors
• Anisotropic light-tailored RKKY interaction in two-dimensional $d$-wave altermagnets
• Tuning of altermagnetism by strain
• Crystal Symmetry Selected Pure Spin Photocurrent in Altermagnetic Insulators
• All-electrically controlled spintronics in altermagnetic heterostructures
• Transverse Spin current at the normal/p-wave magnet junctions
• Emergence of tunable exceptional points in altermagnet-ferromagnet junctions
• Adatom engineering magnetic order in superconductors: Applications to altermagnetic superconductivity
• Interplay of Altermagnetic Order and Wilson Mass in the Dirac Equation: Helical Edge States without Time-Reversal Symmetry
• Phase-modulated superconductivity via altermagnetism
• Floquet engineering spin triplet states in unconventional magnets
• Intra-unit-cell singlet pairing mediated by altermagnetic fluctuations
• Impurity states in altermagnetic superconductors
• Interplay between altermagnetism and topological superconductivity on an unconventional superconducting platform
• Crossover from relativistic to non-relativistic net magnetization for MnTe altermagnet candidate
• Field-sensitive dislocation bound states in two-dimensional $d$-wave altermagnets
• Ubiquitous van der Waals altermagnetism with sliding/moire ferroelectricity
• Pseudo-Ising superconductivity induced by $p$-wave magnetism
• Anomalous-Hall Neel textures in altermagnetic materials
• Floating Edge Bands in the Bernevig-Hughes-Zhang model with Altermagnetism
• Andreev reflection for MnTe altermagnet candidate
• Andreev bound states and supercurrent in an unconventional superconductor-altermagnetic Josephson junction
• Fingerprint of Non-Hermiticity in d-wave Altermagnet
• Diagnosing Altermagnetic Phases through Quantum Oscillations
• From local spin nematicity to altermagnets: Footprints of band topology
• Dominant orbital magnetization in the prototypical altermagnet MnTe
• Magnetic impurities in an altermagnetic metal
• Conditions for orbital selective altermagnetism in Sr${}_2$RuO${}_4$: tight binding model, similarities with cuprates and implications on superconductivity
• Exploring d-Wave Magnetism in Cuprates from Oxygen Moments
• Fractionalized Altermagnets: from neighboring and altermagnetic spin-liquids to spin-symmetric band splitting
• Thermodynamic properties of a superconductor interfaced with an altermagnet
• Unconventional superconductivity of an altermagnetic metal: Polarized BCS and inhomogeneous Fulde-Ferrell-Larkin-Ovchinnikov states
• Light-induced Odd-parity Magnetism in Conventional Collinear Antiferromagnets
• Light-induced odd-parity altermagnets on dimerized lattices
• Quasiparticle interference in altermagnets
• Tunneling conductance in superconducting junctions with $p$-wave unconventional magnets breaking time-reversal symmetry
• Light-induced Floquet spin-triplet Cooper pairs in unconventional magnets
• Josephson current signature of Floquet Majorana and topological accidental zero modes in altermagnet heterostructures
• A large spin-splitting altermagnet designed from the hydroxylated MBene monolayer
• Persistent spin textures, altermagnetism and charge-to-spin conversion in metallic chiral crystals TM${}_3$X${}_6$
• Helical Fermi Arc in Altermagnetic Weyl Semimetal
• Exploration of Altermagnetism in $\mathrm{Ru}{\mathrm{O}}_2$
• Relativistic Spin-momentum locking in altermagnets
• Néel vector controlled exceptional contours in $p$-wave magnet-ferromagnet junctions
• Altermagnetism, ARPES, symmetry, non-relativistic band splitting
• Magnetization symmetry for the MnTe altermagnetic candidate
• Magnetic-field-tuned randomness in inhomogeneous altermagnets
• Spin-Polarized Josephson Supercurrent in Nodeless Altermagnets
• Anisotropic spin dynamics in antiferromagnets with a nonrelativistic spin splitting
• Emerging new phases in correlated Mott insulator Ca2RuO4
• Dirac edge states as signature of two-dimensional altermagnetic topological crystalline phase
• Viscoelastic tensor and hydrodynamics of altermagnets
• Magnetic-Field and Strain Engineering of Modulated Transverse Transport in Altermagnetic Topological Materials
• Orbital currents in lattice multiorbital systems: Continuity equation, torques, and RKKY interaction
• Approximate half-integer quantization in anomalous planar transport in $d$-wave altermagnets
• Orientation dependent anomalous Hall and spin Hall currents at junctions of altermagnets with $p$-wave magnets
• Engineering subgap states in superconductors by the symmetry of altermagnetism
• Inherent momentum-dependent gap structure of altermagnetic superconductors
• Inverse proximity effect in thin-film superconductor/magnet heterostructures with metallic and insulating magnets
• Finite-momentum mixed singlet-triplet pairing in chiral antiferromagnets induced by even-parity spin texture
• Orbital splitter effect and spatial resolution of current-induced orbital accumulation
• Marginal Metals and Kosterlitz-Thouless Type Phase Transition in Disordered Altermagnets
• Non-Hermitian higher-order topological insulators enabled by altermagnet engineering
• Josephson diode and spin-valve effects on the surface of altermagnet CrSb
• Cartesian Nodal Lines and Magnetic Kramers Weyl Nodes in Spin-Split Antiferromagnets
• Interplay between Superconductivity and Altermagnetism in Disordered Materials and Heterostructures
• Current switching behavior mediated via hinge modes in higher-order topological phases using altermagnets
• Bodge: Python package for efficient tight-binding modeling of superconducting nanostructures
• Superconducting States and Intertwined Orders in Metallic Altermagnets
• Josephson effects in the spin-triplet superconductor/altermagnet/spin-triplet superconductor junctions: the detection of the intrinsic $\mathbf{d}$-vector
• Topological superconductivity and superconducting diode effect mediated via unconventional magnet and Ising spin-orbit coupling
• Spin triplet pairing by suppressing altermagnetism
• Altermagnetism Induced Bogoliubov Fermi Surfaces Form Topological Superconductivity