Quarter Metal Superconductivity

Abstract

We investigate the recently discovered multiple superconducting states in rhombohedral graphene quarter metal. We demonstrate that one of these states features a single-spin, single-valley, single-band, single-Fermi-pocket parent state and is most likely a chiral topological pair-density wave, marked by a threefold symmetry that may not be spontaneously broken, unpaired Majorana zero modes at edges, vortices, and dislocations, and an anomalous intrinsic superconducting diode effect.

7+2 pages, 3+3 figures

References in corpus (47)

• New directions in the pursuit of Majorana fermions in solid state systems
• Chiral superconductivity from repulsive interactions in doped graphene
• Superfluidity in topologically nontrivial flat bands
• Observation of an electrically tunable band gap in trilayer graphene
• Stacking-Dependent Band Gap and Quantum Transport in Trilayer Graphene
• Spontaneous Quantum Hall States in Chirally-stacked Few-Layer Graphene Systems
• Superconductivity in rhombohedral trilayer graphene
• Band Structure of ABC-Stacked Graphene Trilayers
• Coulomb-driven broken-symmetry states in doubly gated suspended bilayer graphene
• Isospin magnetism and spin-triplet superconductivity in Bernal bilayer graphene
• Supercurrent diode effect and finite momentum superconductivity
• Superfluidity and Quantum Geometry in Twisted Multilayer Systems
• Transport Spectroscopy of Symmetry-Broken Insulating States in Bilayer Graphene
• Detection of a Cooper-Pair Density Wave in Bi${}_2$Sr${}_2$CaCu${}_2$O${}_{8+x}$
• Zero-field superconducting diode effect in small-twist-angle trilayer graphene
• A phenomenological theory of superconductor diodes
• Trigonal warping and Berry's phase N pi in ABC-stacked multilayer graphene
• Spin-Orbit Enhanced Superconductivity in Bernal Bilayer Graphene
• The experimental observation of quantum Hall effect of l = 3 chiral charge carriers in trilayer graphene
• Electronic phase separation in topological surface states of rhombohedral graphite
• Gate-Tunable Topological Flat Bands in Trilayer Graphene-Boron Nitride Moiré Superlattices
• Majorana Fermions and Disclinations in Topological Crystalline Superconductors
• Spontaneously gapped ground state in suspended bilayer graphene
• Quantum cascade of new correlated phases in trigonally warped bilayer graphene
• Local Compressibility Measurements of Correlated States in Suspended Bilayer Graphene
• Cascade of isospin phase transitions in Bernal bilayer graphene at zero magnetic field
• Correlated Insulator and Chern Insulators in Pentalayer Rhombohedral Stacked Graphene
• Lattice Theory of Pseudospin Ferromagnetism in Bilayer Graphene: Competing Orders and Interaction Induced Quantum Hall States
• Minimum Conductivity and Evidence for Phase Transitions in Ultra-clean Bilayer Graphene
• Transport studies of dual-gated ABC and ABA trilayer graphene: band gap opening and band structure tuning in very large perpendicular electric field
• Theory of zero-field superconducting diode effect in twisted trilayer graphene
• Discovery of a Cooper-Pair Density Wave State in a Transition-Metal Dichalcogenide
• Detection of a Pair Density Wave State in UTe${}_2$
• Signatures of Chiral Superconductivity in Rhombohedral Graphene
• Large Quantum Anomalous Hall Effect in Spin-Orbit Proximitized Rhombohedral Graphene
• Anomalous Hall Crystals in Rhombohedral Multilayer Graphene I: Interaction-Driven Chern Bands and Fractional Quantum Hall States at Zero Magnetic Field
• Tunable quantum anomalous Hall octet driven by orbital magnetism in bilayer graphene
• Josephson Diode Effect Induced by Valley Polarization in Twisted Bilayer Graphene
• Chiral kagome superconductivity modulations with residual Fermi arcs in KV3Sb5 and CsV3Sb5
• Distinguishing Spontaneous Quantum Hall States in Graphene Bilayers
• Stability of Anomalous Hall Crystals in multilayer rhombohedral graphene
• Symmetry analysis of translational symmetry broken density waves: application to hexagonal lattices in two dimensions
• Topological chiral superconductivity beyond pairing in a Fermi liquid
• Ferroelectric and anomalous quantum Hall states in bare rhombohedral trilayer graphene
• Intravalley spin-polarized superconductivity in rhombohedral tetralayer graphene
• Band Renormalization, Quarter Metals, and Chiral Superconductivity in Rhombohedral Tetralayer Graphene
• Nodal pair density waves from a quarter-metal in crystalline graphene multilayers

Cited by in corpus (5)

• Probing superconductivity with tunneling spectroscopy in rhombohedral graphene
• Finite-momentum pairing and superlattice superconductivity in valley-imbalanced rhombohedral graphene
• Variational Monte Carlo Optimization of Topological Chiral Superconductors
• Visualizing Pair-breaking Scattering Interference in Bulk FeSe
• Emblems of pair density waves: dual identity of topological defects and their transport signatures