Valley domain walls act as impenetrable barriers to transport in metallic rhombohedral graphene unless intervalley interactions mediate transmission, and intervalley mixing is required for appreciable supercurrent in SNS' junctions connecting opposite-chirality regions.
Stripe Order in the Metallic and Superconducting Phases of Rhombohedral Hexalayer Graphene
13 Pith papers cite this work. Polarity classification is still indexing.
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abstract
In strongly correlated electronic systems, Coulomb interactions frequently give rise to emergent electronic orders that spontaneously break rotational symmetry. Understanding how such symmetry breaking intertwines with other collective phenomena-such as unconventional superconductivity-and how it shapes experimental observables, particularly transport responses, remains a central challenge in modern condensed-matter physics. Here we report experimental signatures of charge stripe order, with a transport anisotropy rivaling that of quantum Hall stripe phases, coexisting with superconductivity and magnetism in rhombohedral hexalayer graphene. Strikingly, the low-temperature superconducting state not only inherits strong anisotropy but also exhibits a wide range of hysteretic transitions arising from the tunability of the underlying stripe order. Together, these findings reveal a previously unrecognized coexistence between superconductivity and charge stripe, shedding new light on the role of rotational symmetry breaking in shaping unconventional superconductivity in rhombohedral graphene.
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Quantum oscillations reveal a multitone Fermi surface in rhombohedral tetralayer graphene that persists through the superconducting regime and is incompatible with a simply-connected quarter metal.
Non-uniform Berry curvature in parent Chern bands induces momentum-space vortices in the chiral superconducting gap function, with the parent Chern number constraining vortex count independently of model details.
Direct magnetometry imaging establishes reconfigurable chiral superconductivity in rhombohedral graphene with low-current domain control.
Finite density of anyonic excitons in bilayer Laughlin states at total filling 2/3 yields an exciton superfluid with specific bulk topological order, edge spectrum, and stiffness scaling as |δν|^{1/2} near Halperin (112) transitions.
Nonuniform near-surface electrostatic potentials flatten surface bands in rhombohedral graphite at zero displacement field, enabling flat-band regimes in thick samples via self-consistent calculations.
Multiple superconducting phases observed in rhombohedral heptalayer graphene at low displacement fields, with one robust zero-resistance state arising from a half-metallic normal state.
Chiral Bloch states in rhombohedral n-layer graphene cause high-harmonic generation whose dominant order scales linearly with n, with valley splitting producing n-dependent circular dichroism.
Experimental discovery of a family of high-Chern-number orbital magnets in twisted (1+n) rhombohedral graphene with observed topological hierarchy C = n for n=3,4,5.
Theory for QPI in chiral-band superconductors shows impurity-induced local spectral functions distinguish zero- and finite-momentum pairing states.
Gauge invariance of the quantum geometric tensor implies zero modes of a non-abelian Dirac operator in band insulators whose theta-function solutions define CP^{N-1} spaces and generalize vortexability criteria with links to lowest Landau level algebra.
Leading-order RG analysis shows repulsive interactions stabilize a chiral odd-parity pair density wave in quarter metals of chirally stacked graphene heterostructures.
For weak attractive interactions the evolution from chiral superconductor to composite Fermi liquid passes through an intermediate stable Landau Fermi liquid, while stronger interactions may route through a non-Abelian paired quantum Hall state.
citing papers explorer
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Valley Valves at Domain Walls in Symmetry-Broken Rhombohedral Graphene
Valley domain walls act as impenetrable barriers to transport in metallic rhombohedral graphene unless intervalley interactions mediate transmission, and intervalley mixing is required for appreciable supercurrent in SNS' junctions connecting opposite-chirality regions.
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Reconfigurable chiral superconductivity
Direct magnetometry imaging establishes reconfigurable chiral superconductivity in rhombohedral graphene with low-current domain control.
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Electrostatically stabilized surface flat bands in rhombohedral graphite at zero displacement field
Nonuniform near-surface electrostatic potentials flatten surface bands in rhombohedral graphite at zero displacement field, enabling flat-band regimes in thick samples via self-consistent calculations.
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Multiple Superconducting Phases in Rhombohedral Heptalayer Graphene
Multiple superconducting phases observed in rhombohedral heptalayer graphene at low displacement fields, with one robust zero-resistance state arising from a half-metallic normal state.
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High-harmonic generation in systems with chiral Bloch states: application to rhombohedral graphene
Chiral Bloch states in rhombohedral n-layer graphene cause high-harmonic generation whose dominant order scales linearly with n, with valley splitting producing n-dependent circular dichroism.
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Family of High-Chern-Number Orbital Magnets in Twisted Rhombohedral Graphene
Experimental discovery of a family of high-Chern-number orbital magnets in twisted (1+n) rhombohedral graphene with observed topological hierarchy C = n for n=3,4,5.
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Pair density wave in quarter metals from a repulsive fermionic interaction in graphene heterostructures: A renormalization group study
Leading-order RG analysis shows repulsive interactions stabilize a chiral odd-parity pair density wave in quarter metals of chirally stacked graphene heterostructures.