Chirality and correlations in the spontaneous spin-valley polarization of rhombohedral multilayer graphene
arXiv:2304.07467 · doi:10.1103/PhysRevB.108.L041101
Abstract
We investigate the total energies of spontaneous spin-valley polarized states in bi-, tri-, and tetralayer rhombohedral graphene where the long-range Coulomb correlations are accounted for within the random phase approximation. Our analysis of the phase diagrams for varying carrier doping and perpendicular electric fields shows that the exchange interaction between chiral electrons is the main driver of spin-valley polarization, while the presence of Coulomb correlations brings the flavor polarization phase boundaries to carrier densities close to the complete filling of the Mexican hat shape top at the Dirac points. We find that the tendency towards spontaneous spin-valley polarization is enhanced with the chirality of the bands and therefore with increasing number of layers.
10 pages, 5 figures
References in corpus (16)
- The electronic properties of graphene
- Superconductivity in rhombohedral trilayer graphene
- Chiral Decomposition in the Electronic Structure of Graphene Multilayers
- Pseudospin Magnetism in Graphene
- Colloquium: Graphene spectroscopy
- Local Compressibility Measurements of Correlated States in Suspended Bilayer Graphene
- Graphene: A Pseudochiral Fermi Liquid
- Spin and Orbital Metallic Magnetism in Rhombohedral Trilayer Graphene
- Superconductivity from electronic interactions and spin-orbit enhancement in bilayer and trilayer graphene
- Insulating state in tetralayers reveals an even-odd interaction effect in multilayer graphene
- Multilayer graphenes as a platform for interaction-driven physics and topological superconductivity
- Functional Renormalization Group Study of Superconductivity in Rhombohedral Trilayer Graphene
- Correlated metals and unconventional superconductivity in rhombohedral trilayer graphene: A renormalization group analysis
- Flavor symmetry breaking in spin-orbit coupled bilayer graphene
- Interaction-induced insulating state in thick multilayer graphene
- Strong correlations in ABC-stacked trilayer graphene: Moiré is important
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- Pair density wave in quarter metals from a repulsive fermionic interaction in graphene heterostructures: A renormalization group study
- Charge density waves and stripes in quarter metals of graphene heterostructures