Spin and orbital metallic magnetism in rhombohedral trilayer graphene

Abstract

Lightly doped multilayer graphene surprised researchers with the emergence of superconductivity and magnetism under strong electric displacement fields. The authors interpret the displacement field versus hole-density phase diagram using mean-field theory and experimentally informed band structure. They find that magnetism in these electronic systems is often intertwined with nematic order because of the noncompact Fermi sea topology and fourfold spin-valley degeneracy.