Angular dependence of domain wall resistivity in SrRuO$_{\bf 3}$ films

Details Angular dependence of domain wall resistivity in SrRuO$_{\bf 3}$ films Angular dependence of domain wall resistivity in SrRuO$_{\bf 3}$ films

2003-01-21

arxiv.org/abs/cond-mat/0301400v2

Physics

Condensed Matter

Strongly Correlated Electrons

5 pages, 5 figures

Scientific paper

10.1103/PhysRevB.67.134436

${\rm SrRuO_3}$ is a 4d itinerant ferromagnet (T$_{c}$ $\sim $150 K) with stripe domain structure. Using high-quality thin films of SrRuO$_{3}$ we study the resistivity induced by its very narrow ($\sim 3$ nm) Bloch domain walls, $\rho_{DW}$ (DWR), at temperatures between 2 K and T$_{c}$ as a function of the angle, $\theta $, between the electric current and the ferromagnetic domains walls. We find that $\rho_{DW}(T,\theta)=\sin^2\theta \rho_{DW}(T,90)+B(\theta)\rho_{DW}(T,0)$ which provides the first experimental indication that the angular dependence of spin accumulation contribution to DWR is $\sin^2\theta$. We expect magnetic multilayers to exhibit a similar behavior.

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