Tunable Josephson diode effect in singlet superconductor-altermagnet-triplet superconductor junctions

Abstract

Recently discovered phase of collinear magnet called, altermagnet breaks time reversal symmetry (TRS), exhibits momentum-dependent spin-splitting of band structure with zero net magnetization. In this work, we theoretically investigate the Josephson junction (JJ) of spin singlet superconductor (SC)/altermagnet/spin triplet SC and demonstrate that it manifests field free Josephson diode effect (JDE). We illustrate that there are four key requisites to have JDE in such JJs, namely, broken TRS, left and right SC in the JJ shall be non-identical, presence of spin orbit interaction, and anisotropy in spin polarization at the Fermi surface or anisotropy in pair potential of the SC. It has also been shown that by applying a gate potential in the altermagnetic regime, one can not only reverse the sign of efficiency but also modulate its magnitude. Our system can be used as a superconducting rectifier that can be tuned efficiently using gate voltage and system parameters without having external magnetic field.

9 pages, 6 figures

References in corpus (43)

• Altermagnetism: spin-momentum locked phase protected by non-relativistic symmetries
• Multifunctional Antiferromagnetic Materials with Giant Piezomagnetism and Noncollinear Spin Current
• Giant and tunneling magnetoresistance effects from anisotropic and valley-dependent spin-momentum interactions in antiferromagnets
• Realization of the field-free Josephson Diode
• A Josephson junction supercurrent diode
• Evidence of topological superconductivity in planar Josephson junctions
• Two-dimensional epitaxial superconductor-semiconductor heterostructures: A platform for topological superconducting networks
• Zero-field superconducting diode effect in small-twist-angle trilayer graphene
• Topological Superconductivity in Two-Dimensional Altermagnetic Metals
• The Josephson diode effect in supercurrent interferometers
• Finite-momentum Cooper pairing in proximitized altermagnets
• Field-free superconducting diode effect in noncentrosymmetric superconductor/ferromagnet multilayers
• General theory of Josephson Diodes
• Altermagnetic Routes to Majorana Modes in Zero Net Magnetization
• Gate-tunable Superconducting Diode Effect in a Three-terminal Josephson Device
• Quantum transport through a graphene nanoribbon-superconductor junction
• Phase-shifted Andreev levels in an altermagnet Josephson junction
• Majorana corner modes and tunable patterns in an altermagnet heterostructure
• Theory of diode effect in d-wave superconductor junctions on the surface of topological insulator
• Josephson Diode Effect Induced by Valley Polarization in Twisted Bilayer Graphene
• Tunable Josephson diode effect on the surface of topological insulators
• Superconducting phenomena in systems with unconventional magnets
• Orientation-dependent Josephson effect in spin-singlet superconductor/altermagnet/spin-triplet superconductor junctions
• Floquet Second-Order Topological Superconductor Driven via Ferromagnetic Resonance
• Enhancing the Josephson diode effect with Majorana bound states
• $\phi$ Josephson junction induced by altermagnetism
• Field-free Josephson diode effect in altermagnet/normal metal/altermagnet junctions
• Parity protected superconducting diode effect in topological Josephson junctions
• Gate-tunable Josephson diode effect in Rashba spin-orbit coupled quantum dot junctions
• Phase Asymmetry of Andreev Spectra From Cooper-Pair Momentum
• Superconducting diode effect in quasi-one-dimensional systems
• Josephson diode based on conventional superconductors and a chiral quantum dot
• Microscopic theory of tunneling spectroscopy in Sr${}_2$RuO${}_4$
• Quantum interference in topological insulator Josephson junctions
• Design of Josephson diode based on magnetic impurity
• Josephson transistor from the superconducting diode effect in domain wall and skyrmion magnetic racetracks
• Anomalous supercurrent and diode effect in locally perturbed topological Josephson junctions
• Spin-triplet superconductor$-$quantum anomalous Hall insulator$-$spin-triplet superconductor Josephson junctions: $0$-$\pi$ transition, ${\varphi }_0$ phase and switch effects
• Field-free Josephson diode effect in interacting chiral quantum dot junctions
• Transport signatures of topological phases in double nanowires probed by spin-polarized STM
• Josephson diode effect in one-dimensional quantum wires connected to superconductors with mixed singlet-triplet pairing
• Interaction Driven Floquet Engineering of Topological Superconductivity in Rashba Nanowires
• Transport across a system with three p-wave superconducting wires: effects of Majorana modes and interactions

Cited by in corpus (4)

• Tunneling conductance in superconducting junctions with $p$-wave unconventional magnets breaking time-reversal symmetry
• Josephson diode and spin-valve effects on the surface of altermagnet CrSb
• Current switching behavior mediated via hinge modes in higher-order topological phases using altermagnets
• Interplay between Superconductivity and Altermagnetism in Disordered Materials and Heterostructures