Enhanced Superconducting Diode Effect due to coexisting Phases

Abstract

The superconducting diode effect refers to an asymmetry in the critical supercurrent $J_c(\hat{n})$ along opposite directions, $J_c(\hat{n})\ne J_c(-\hat{n})$. While the basic symmetry requirements for this effect are known, it is, for junction-free systems, difficult to capture within current theoretical models the large current asymmetries $J_c(\hat{n})/J_c(-\hat{n})$ recently observed in experiment. We here propose and develop a theory for an enhancement mechanism of the diode effect arising from spontaneous symmetry breaking. We show - both within a phenomenological and a microscopic theory - that there is a coupling of the supercurrent and the underlying symmetry-breaking order parameter. This coupling can enhance the current asymmetry significantly. Our work might not only provide a possible explanation for recent experiments on trilayer graphene but also pave the way for future realizations of the superconducting diode effect with large current asymmetries.

11 pages, 5 figures

References in corpus (51)

• Emergent ferromagnetism near three-quarters filling in twisted bilayer graphene
• Intrinsic quantized anomalous Hall effect in a moiré heterostructure
• Magic Angle Spectroscopy
• Charge-Order and Broken Rotational Symmetry in Magic Angle Twisted Bilayer Graphene
• Cascade of Phase Transitions and Dirac Revivals in Magic Angle Graphene
• Realization of the field-free Josephson Diode
• A Josephson junction supercurrent diode
• Nematicity and Competing Orders in Superconducting Magic-Angle Graphene
• Supercurrent diode effect and finite momentum superconductivity
• Zero-field superconducting diode effect in small-twist-angle trilayer graphene
• A phenomenological theory of superconductor diodes
• Supercurrent diode effect and magnetochiral anisotropy in few-layer NbSe${}_2$
• Ubiquitous Superconducting Diode Effect in Superconductor Thin Films
• Theory of the supercurrent diode effect in Rashba superconductors with arbitrary disorder
• The Josephson diode effect in supercurrent interferometers
• Field-free superconducting diode effect in noncentrosymmetric superconductor/ferromagnet multilayers
• Superconducting diode effect via conformal-mapped nanoholes
• General theory of Josephson Diodes
• Gate-tunable Superconducting Diode Effect in a Three-terminal Josephson Device
• Theory of zero-field superconducting diode effect in twisted trilayer graphene
• Josephson Diode Effect in High Mobility InSb Nanoflags
• Demonstration of a superconducting diode-with-memory, operational at zero magnetic field with switchable nonreciprocity
• Superconducting diode effect due to magnetochiral anisotropy in topological insulator and Rashba nanowires
• Universal moiré nematic phase in twisted graphitic systems
• Theory of diode effect in d-wave superconductor junctions on the surface of topological insulator
• Direct Observation of a Superconducting Vortex Diode
• Josephson Diode Effect Induced by Valley Polarization in Twisted Bilayer Graphene
• Diamagnetic mechanism of critical current non-reciprocity in multilayered superconductors
• Hybrid helical state and superconducting diode effect in S/F/TI heterostructures
• Magnetic Proximity-Induced Superconducting Diode Effect and Infinite Magnetoresistance in van der Waals Heterostructure
• Microscopic study of the Josephson supercurrent diode effect in Josephson junctions based on two-dimensional electron gas
• Symmetry conditions for the superconducting diode effect in chiral superconductors
• Superconducting diode effect and nonreciprocal transition lines
• Pair-density-wave and chiral superconductivity in twisted bilayer transition-metal-dichalcogenides
• Diode effects in current-biased Josephson junctions
• Field-free anomalous junction and superconducting diode effect in spin split superconductor/topological insulator junctions
• Non-Reciprocal Supercurrents in a Field-Free Graphene Josephson Triode
• Parity protected superconducting diode effect in topological Josephson junctions
• Phase Asymmetry of Andreev Spectra From Cooper-Pair Momentum
• Prediction of ferroelectric superconductors with reversible superconducting diode effect
• The supercurrent diode effect and nonreciprocal paraconductivity due to the chiral structure of nanotubes
• Superconducting diode effect in quasi-one-dimensional systems
• Josephson diode based on conventional superconductors and a chiral quantum dot
• Electron spin resonance and collective excitations in magic-angle twisted bilayer graphene
• Electric-field-tunable electronic nematic order in twisted double-bilayer graphene
• Field-free superconducting diode in a magnetically nanostructured superconductor
• Anomalous superconducting diode effect in a polar superconductor
• Current Switching of Valley Polarization in Twisted Bilayer Graphene
• Spontaneous superconducting diode effect in non-magnetic Nb/Ru/Sr${}_2$RuO${}_4$ topological junctions
• Machine Learning Microscopic Form of Nematic Order in twisted double-bilayer graphene
• Piezoelectric effect and diode effect in anapole and monopole superconductors

Cited by in corpus (35)

• Altermagnetic superconducting diode effect
• Superconducting phenomena in systems with unconventional magnets
• Enhancing the Josephson diode effect with Majorana bound states
• Gate-tunable Josephson diode effect in Rashba spin-orbit coupled quantum dot junctions
• Altermagnetism in the layered intercalated transition metal dichalcogenide CoNb${}_4$Se${}_8$
• Tuning the Josephson diode response with an ac current
• Supercurrent Diode Effect in Helical Superconductors
• Finite-momentum superconductivity in two-dimensional altermagnets with a Rashba-type spin-orbit coupling
• Superconducting diodes from magnetization gradients
• Superconducting Diode Effect in Multiphase Superconductors
• Nonreciprocal superconducting transport and the spin Hall effect in gyrotropic structures
• Superconducting Diode Effect in Two-dimensional Topological Insulator Edges and Josephson Junctions
• Superconducting diode efficiency from singlet-triplet mixing in disordered systems
• Field-free Josephson diode effect in interacting chiral quantum dot junctions
• Superconducting magic-angle twisted trilayer graphene hosts competing magnetic order and moiré inhomogeneities
• Intrinsic superconducting diode effect and nonreciprocal superconductivity in rhombohedral graphene multilayers
• Optimizing one dimensional superconducting diodes: Interplay of Rashba spin-orbit coupling and magnetic fields
• Harnessing the superconducting diode effect through inhomogeneous magnetic fields
• Supercurrent Diode Effect in Josephson Interferometers with Multiband Superconductors
• Geometric and conventional contributions of superconducting diode effect: Application to flat-band systems
• Floquet-engineered diode performance in a Majorana-quantum dot Josephson junction
• Probing superconductivity with tunneling spectroscopy in rhombohedral graphene
• ${\varphi }_0$-junction and Josephson diode effect in high-temperature superconductor
• Transport Signatures of Radial Rashba Spin-Orbit Coupling at Ferromagnet/Superconductor Interfaces
• Efficiency of the superconducting diode effect of pair-density-wave states in two-dimensional $d$-wave altermagnets
• Relations between normal state nonreciprocal transport and the superconducting diode effect in the trivial and topological phases
• Orbital Fulde-Ferrell-Larkin-Ovchinnikov state in 2H-NbS2 flakes
• Dissipation-enhanced non-reciprocal superconductivity: application to multi-valley superconductors
• Nonreciprocal Current-Induced Zero-Resistance State in Valley-Polarized Superconductors
• Enhanced Superconducting Diode Effect in the Asymmetric Hatsugai-Kohmoto Model
• Thermodynamic Constraints on Perfect Equilibrium Superconducting Diodes
• Topological superconductivity and superconducting diode effect mediated via unconventional magnet and Ising spin-orbit coupling
• Field-free Superconducting Diode Effect and Topological Fulde-Ferrell Superconductivity in Altermagnetic Shiba Chains
• Algebraic Criterion and Graph-Theoretic Construction of Intrinsic Superconducting Diode Effects
• Current-induced re-entrant superconductivity and extreme nonreciprocal superconducting diode effect in valley-polarized systems