Effect of spin-orbit interaction on a magnetic impurity in the vicinity of a surface

Details Effect of spin-orbit interaction on a magnetic impurity in the vicinity of a surface Effect of spin-orbit interaction on a magnetic impurity in the vicinity of a surface

2005-12-07

arxiv.org/abs/cond-mat/0512154v1

Phys. Rev. Lett. 96, 067204 (2006)

Physics

Condensed Matter

Strongly Correlated Electrons

4 pages, 4 figures

Scientific paper

10.1103/PhysRevLett.96.067204

We propose a new mechanism for surface-induced magnetic anisotropy to explain the thickness-dependence of the Kondo resistivity of thin films of dilute magnetic alloys. The surface anisotropy energy, generated by spin-orbit coupling on the magnetic impurity itself, is an oscillating function of the distance d from the surface and decays as 1/d^2. Numerical estimates based on simple models suggest that this mechanism, unlike its alternatives, gives rise to an effect of the desired order of magnitude.

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