title: Ferromagnetic properties in low-doped zigzag graphene nanoribbons.
abstract: The temperature-dependent edge magnetic susceptibility [Formula: see text] and the uniform magnetic susceptibility χ in zigzag graphene nanoribbons is studied within the Hubbard model on a honeycomb lattice. By using the determinant quantum Monte Carlo (DQMC) method, it is found that the ferromagnetic fluctuations at the zigzag edge dominate around half-filling, and that the fluctuations are strengthened markedly by the on-site Coulomb interaction U, which may lead to a possible high-temperature edge ferromagnetic behaviour in low-doped zigzag graphene nanoribbons.
authors.affiliation: Department of Physics, Beijing Normal University, Beijing 100875, People's Republic of China.
authors.forename: Shuaiyu
authors.initials: S
authors.lastname: Li
authors.forename: Lin
authors.initials: L
authors.lastname: Tian
authors.forename: Lingli
authors.initials: L
authors.lastname: Shi
authors.forename: Lin
authors.initials: L
authors.lastname: Wen
authors.forename: Tianxing
authors.initials: T
authors.lastname: Ma