Anisotropic susceptibility of ferromagnetic ultrathin Co films on vicinal Cu

Details Anisotropic susceptibility of ferromagnetic ultrathin Co films on vicinal Cu Anisotropic susceptibility of ferromagnetic ultrathin Co films on vicinal Cu

2003-03-17

arxiv.org/abs/cond-mat/0303320v1

Physics

Condensed Matter

Strongly Correlated Electrons

7 pages, 3 figures

Scientific paper

10.1103/PhysRevB.67.184417

We measure the magnetic susceptibility of ultrathin Co films with an in-plane uniaxial magnetic anisotropy grown on a vicinal Cu substrate. Above the Curie temperature the influence of the magnetic anisotropy can be investigated by means of the parallel and transverse susceptibilities along the easy and hard axes. By comparison with a theoretical analysis of the susceptibilities we determine the isotropic exchange interaction and the magnetic anisotropy. These calculations are performed in the framework of a Heisenberg model by means of a many-body Green's function method, since collective magnetic excitations are very important in two-dimensional magnets.

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