title: Determination of magnetic anisotropy constants in Fe ultrathin film on vicinal Si(111) by anisotropic magnetoresistance.
abstract: The epitaxial growth of ultrathin Fe film on Si(111) surface provides an excellent opportunity to investigate the contribution of magnetic anisotropy to magnetic behavior. Here, we present the anisotropic magnetoresistance (AMR) effect of Fe single crystal film on vicinal Si(111) substrate with atomically flat ultrathin p(2 × 2) iron silicide as buffer layer. Owing to the tiny misorientation from Fe(111) plane, the symmetry of magnetocrystalline anisotropy energy changes from the six-fold to a superposition of six-fold, four-fold and a weakly uniaxial contribution. Furthermore, the magnitudes of various magnetic anisotropy constants were derived from torque curves on the basis of AMR results. Our work suggests that AMR measurements can be employed to figure out precisely the contributions of various magnetic anisotropy constants.
authors.affiliation: State Key Laboratory of Magnetism and Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China.
authors.forename: Jun
authors.initials: J
authors.lastname: Ye
authors.forename: Wei
authors.initials: W
authors.lastname: He
authors.forename: Qiong
authors.initials: Q
authors.lastname: Wu
authors.forename: Hao-Liang
authors.initials: HL
authors.lastname: Liu
authors.forename: Xiang-Qun
authors.initials: XQ
authors.lastname: Zhang
authors.forename: Zi-Yu
authors.initials: ZY
authors.lastname: Chen
authors.forename: Zhao-Hua
authors.initials: ZH
authors.lastname: Cheng