Superconducting diode effect and interference patterns in Kagome CsV3Sb5

Abstract

The interplay among frustrated lattice geometry, nontrivial band topology and correlation yields rich quantum states of matter in Kagome systems. A series of recent members in this family, AV3Sb5 (A= K, Rb, Cs), exhibit a cascade of symmetry-breaking transitions, involving the 3Q chiral charge ordering, electronic nematicity, roton pair-density-wave and superconductivity. The nature of the superconducting order is yet to be resolved. Here, we report an indication of chiral superconducting domains with boundary supercurrents in intrinsic CsV3Sb5 flakes. Magnetic field-free superconducting diode effect is observed with polarity modulated by thermal histories, suggesting dynamical superconducting order domains in a spontaneous time-reversal symmetry breaking background. Strikingly, the critical current exhibits the double-slit superconducting interference patterns when subjected to an external magnetic field. Characteristics of the patterns are modulated by thermal cycling. These phenomena are proposed as a consequence of periodically modulated supercurrents flowing along certain domain boundaries constrained by fluxoid quantization. Our results imply a chiral superconducting order, opening a potential for exploring exotic physics, e.g. Majorana zero modes, in this intriguing topological Kagome system.

17 pages,13 figures

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Cited by in corpus (56)

• Signatures of Chiral Superconductivity in Rhombohedral Graphene
• Chiral kagome superconductivity modulations with residual Fermi arcs in KV3Sb5 and CsV3Sb5
• High-temperature field-free superconducting diode effect in high-Tc cuprates
• Superconducting Diode Effects: Mechanisms, Materials and Applications
• Evidence chain for time-reversal symmetry-breaking kagome superconductivity
• Correlated Electronic Structure and Incipient Flat Bands of the Kagome Superconductor CsCr3Sb5
• Supercurrent Diode Effect in Helical Superconductors
• Emergent superconductivity and pair density wave at antiphase boundaries of charge density wave order in kagome metals
• Kagome metals
• Superconducting Diode Effect in Multiphase Superconductors
• Chiral pair density waves with residual Fermi arcs in RbV3Sb5
• Phonon collapse and anharmonic melting of the 3D charge-density wave in kagome metals
• Evidence of a distinct collective mode in Kagome superconductors
• Phase-Separated Charge Order and Twinning Across Length Scales in CsV${}_3$Sb${}_5$
• Superconducting diode efficiency from singlet-triplet mixing in disordered systems
• Theory of charge-6e condensed phase in Kagome lattice superconductors
• AV${}_3$Sb${}_5$ kagome superconductors: a review with transport measurements
• Origin of anomalous magnetotransport in kagome superconductors AV${}_3$Sb${}_5$ (A=K,Rb,Cs)
• Perspective: imaging atomic step geometry to determine surface terminations of kagome materials and beyond
• Observation of Anomalous Thermal Hall Effect in a Kagome Superconductor
• Supercurrent Diode Effect in Josephson Interferometers with Multiband Superconductors
• Conventional Superconductivity in the Doped Kagome Superconductor Cs(V0.86Ta0.14)3Sb5 from Vortex Lattice Studies
• Quantum-metric-induced giant and reversible nonreciprocal transport phenomena in chiral loop-current phases of kagome metals
• Fully-gapped superconductivity with rotational symmetry breaking in pressurized kagome metal CsV${}_3$Sb${}_5$
• Electronic structure of $A$V${}_3$Sb${}_5$ kagome metals
• Absence of diode effect in chiral type-I superconductor NbGe2
• Phase coherence of charge-$6e$ superconductors via a frustrated Kagome XY antiferromagnet
• Thermomodulated intrinsic Josephson effect in Kagome CsV3Sb5
• Breathing-Driven Metal-Insulator Transition in Correlated Kagome Systems
• Magnetoresistance hysteresis in the superconduting state of Kagome CsV${}_3$Sb${}_5$
• Josephson diode effect in nanowire-based Andreev molecules
• Two-dimensional superconducting diode effect in topological insulator/superconductor heterostructure
• Switchable chiral 2x2 pair density wave in pure CsV3Sb5
• Josephson diodes induced by the loop current states
• Electric Control of Polarity in Spin-Orbit Josephson Diode
• Phase-sensitive evidence for pair density waves in a kagome superconductor
• Symmetry-broken ground state and phonon mediated superconductivity in Kagome CsV${}_3$Sb${}_5$
• Resistive anisotropy in the charge density wave phase of Kagome superconductor CsV3Sb5 thin films
• Recent progress in quantum spin liquids, fractional magnetization plateaus, and unconventional superconductivity in kagome lattices
• Electronic inhomogeneity in Cs- and Sb-terminated surfaces of CsV${}_3$Sb${}_5$ probed by scanning photoemission spectromicroscopy
• Dual-mode superconducting diode effect enabled by in-plane and out-of-plane magnetic field
• The possible frustrated superconductivity in the kagome superconductors
• Superconducting Diode Effect in Gradiently Strained Nb0.5Ti0.5N Films
• Current-induced magnetoresistance hysteresis in the kagome superconductor CsV${}_3$Sb${}_5$
• Supercurrent-induced antiferromagnetic order and spin-triplet pair generation in quantum critical d-wave superconductors
• Observation of field-odd and field-free superconducting diode effects in ${\mathrm{Mo}}_2\mathrm{C}$ nanoflakes
• Strain-Tuned Nodal Superconductivity in the Charge-Ordered Kagome Metal CsV${}_3$Sb${}_5$
• Pressure induced magnetic-field-free superconducting diode effect in NbSe2 flake
• Topological pair density waves in kagome superconductors
• Giant and robust Josephson diode effect in multiband topological nanowires
• Signature of chiral superconducting order parameter evidenced in mesoscopic superconductors
• Epitaxial growth and magneto-transport properties of kagome metal FeGe thin films
• Algebraic Criterion and Graph-Theoretic Construction of Intrinsic Superconducting Diode Effects
• Time-reversal symmetry-breaking phenomena in transport study of kagome superconductivity
• Microscopic origin of period-four stripe charge-density-wave in kagome metal CsV${}_3$Sb${}_5$
• Nanoscale electrothermal-switch superconducting diode for electrically programmable superconducting circuits