Electronic transport in ferromagnetic conductors with inhomogeneous magnetic order parameter -- domain-wall resistance

Details Electronic transport in ferromagnetic conductors with inhomogeneous magnetic order parameter -- domain-wall resistance Electronic transport in ferromagnetic conductors with inhomogeneous magnetic order parameter -- domain-wall resistance

2009-03-17

arxiv.org/abs/0903.3033v2

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

19 Pages

Scientific paper

We microscopically derive transport equations for the conduction electrons in ferromagnetic materials with an inhomogeneous magnetization profile. Our quantum kinetic approach includes elastic scattering and anisotropic spin-flip scattering at magnetic impurities. In the diffusive limit, we calculate the resistance through a domain wall and find that the domain-wall resistance can be positive or negative. In the limit of long domain walls we derive analytical expressions and compare them with existing works, which used less general models or different theoretical frameworks.

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