The size of Cooper pairs is given by the trace of their quantum geometric quadrupole moment, with Berry curvature entering via the pair wavefunction phase to impose a geometric lower bound alongside the quantum metric.
H., Yao, H
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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.
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.
Theory for QPI in chiral-band superconductors shows impurity-induced local spectral functions distinguish zero- and finite-momentum pairing states.
Displacement fields in rhombohedral pentalayer graphene cause asymmetric flattening of conduction versus valence bands, producing near-ideal quantum geometry that supports fractional quantum anomalous Hall states under electron doping.
citing papers explorer
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Quantum Geometric Quadrupole of Cooper Pairs
The size of Cooper pairs is given by the trace of their quantum geometric quadrupole moment, with Berry curvature entering via the pair wavefunction phase to impose a geometric lower bound alongside the quantum metric.
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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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Chiral superconductors from parent states with non-uniform Berry curvature: Momentum-space vortices, BdG topology, and thermal Hall conductivity
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.
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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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Probing pairing symmetries through quasiparticle interference in chiral Bloch bands
Theory for QPI in chiral-band superconductors shows impurity-induced local spectral functions distinguish zero- and finite-momentum pairing states.
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Field-induced asymmetric band flattening and ideal quantum geometry in rhombohedral graphene
Displacement fields in rhombohedral pentalayer graphene cause asymmetric flattening of conduction versus valence bands, producing near-ideal quantum geometry that supports fractional quantum anomalous Hall states under electron doping.