Ballistic and diffuse transport through a ferromagnetic domain wall

Details Ballistic and diffuse transport through a ferromagnetic domain wall Ballistic and diffuse transport through a ferromagnetic domain wall

1999-02-15

arxiv.org/abs/cond-mat/9902210v2

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

9 pages, 3 figures, to appear in Phys. Rev. B

Scientific paper

10.1103/PhysRevB.60.3406

We study transport through ballistic and diffuse ferromagnetic domain walls in a two-band Stoner model with a rotating magnetization direction. For a ballistic domain wall, the change in the conductance due to the domain wall scattering is obtained from an adiabatic approximation valid when the length of the domain wall is much longer than the Fermi wavelength. In diffuse systems, the change in the resistivity is calculated using a diagrammatic technique to the lowest order in the domain wall scattering and taking into account spin-dependent scattering lifetimes and screening of the domain wall potential.

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