Flavor symmetry breaking in spin-orbit coupled bilayer graphene
arXiv:2302.12284 · doi:10.1103/PhysRevB.107.L201119
Abstract
Recent experimental discovery of flavor symmetry breaking metallic phases in Bernal-stacked bilayer graphene points to the strongly interacting nature of electrons near the top (bottom) of its valence (conduction) band. Superconductivity was also observed in between these symmetry breaking phases when the graphene bilayer is placed under a small in-plane magnetic field or in close proximity to a monolayer WSe substrate. Here we address the correlated nature of the band edge electrons and obtain the quantum phase diagram of their many-body ground states incorporating the effect of proximity induced spin-orbit coupling. We find that in addition to the spin/valley flavor polarized half and quarter metallic states, two types of intervalley coherent phases emerge near the phase boundaries between the flavor polarized metals. Both spin-orbit coupling and in-plane magnetic field disfavor the spin-unpolarized valley coherent phase. Our findings suggest possible competition between intervalley coherence and superconducting orders, arising from the intriguing correlation effects in bilayer graphene in the presence of spin-orbit coupling.
References in corpus (32)
- The electronic properties of graphene
- Magic-angle graphene superlattices: a new platform for unconventional superconductivity
- Correlated Insulator Behaviour at Half-Filling in Magic Angle Graphene Superlattices
- Electronic transport in two dimensional graphene
- Tuning superconductivity in twisted bilayer graphene
- Emergent ferromagnetism near three-quarters filling in twisted bilayer graphene
- Superconductors, Orbital Magnets, and Correlated States in Magic Angle Bilayer Graphene
- Intrinsic quantized anomalous Hall effect in a moiré heterostructure
- The electronic properties of bilayer graphene
- Fractional quantum Hall effect and insulating phase of Dirac electrons in graphene
- Quantum Hall Ferromagnetism in Graphene
- Landau Level Splitting in Graphene in High Magnetic Fields
- Superconductivity in rhombohedral trilayer graphene
- Isospin magnetism and spin-triplet superconductivity in Bernal bilayer graphene
- Spin and valley quantum Hall ferromagnetism in graphene
- Half and quarter metals in rhombohedral trilayer graphene
- Spin-Orbit Enhanced Superconductivity in Bernal Bilayer Graphene
- Collective Modes and Skyrmion Excitations in Graphene SU(4) Quantum Hall Ferromagnets
- Accurate tight-binding and continuum models for the bands of bilayer graphene
- Quantum cascade of new correlated phases in trigonally warped bilayer graphene
- Chemical Potential and Quantum Hall Ferromagnetism in Bilayer Graphene
- Cascade of isospin phase transitions in Bernal bilayer graphene at zero magnetic field
- Low density ferromagnetism in biased bilayer graphene
- Inter-valley coherent order and isospin fluctuation mediated superconductivity in rhombohedral trilayer graphene
- Acoustic-phonon-mediated superconductivity in Bernal bilayer graphene
- Spin and Orbital Metallic Magnetism in Rhombohedral Trilayer Graphene
- Spin-triplet superconductivity at the onset of isospin order in biased bilayer graphene
- Isospin and momentum polarized orders in bilayer graphene
- Enhanced superconductivity through virtual tunneling in Bernal bilayer graphene coupled to WSe
- Stabilizing fluctuating spin-triplet superconductivity in graphene via induced spin-orbit coupling
- Magnetic ratchet effect in bilayer graphene
- Transport properties of bilayer graphene in a strong in-plane magnetic field
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- Tunable superconductivity in electron- and hole-doped Bernal bilayer graphene
- Nematicity and Orbital Depairing in Superconducting Bernal Bilayer Graphene with Strong Spin Orbit Coupling
- Electrical control of spin and valley in spin-orbit coupled graphene multilayers
- Correlated Phases in Spin-Orbit-Coupled Rhombohedral Trilayer Graphene
- Gate-Defined Topological Josephson Junctions in Bernal Bilayer Graphene
- Gate-tunable topological phases in superlattice modulated bilayer graphene
- Swapping exchange and spin-orbit induced correlated phases in proximitized Bernal bilayer graphene
- Symmetry-broken metallic orders in spin-orbit-coupled Bernal bilayer graphene
- Topological flat bands, valley polarization, and interband superconductivity in magic-angle twisted bilayer graphene with proximitized spin-orbit couplings
- Chirality and correlations in the spontaneous spin-valley polarization of rhombohedral multilayer graphene
- Quarter-Metal Phases in Multilayer Graphene: Ising-XY and Annular Lifshitz Transitions
- Unconventional Metallic Magnetism: Non-analyticity and Sign-changing Behavior of Orbital Magnetization in ABC Trilayer Graphene
- Promoting and imaging intervalley coherent order in rhombohedral tetralayer graphene on MoS2
- Topological frequency conversion in rhombohedral multilayer graphene
- Ferroelectric switching control of spin current in graphene proximitized by InSe
- Probing valley phenomena with gate-defined valley splitters
- Visualization of intervalley coherent phase in PtSe2/HOPG heterojunction
- Pseudospin density wave instability in two-dimensional electron bilayers
- Full, three-quarter, half and quarter Wigner crystals in Bernal bilayer graphene
- Topological phases, van Hove singularities, and spin texture in magic-angle twisted bilayer graphene in the presence of proximity-induced spin-orbit couplings