Linear magnetization dependence of the intrinsic anomalous Hall effect

Details Linear magnetization dependence of the intrinsic anomalous Hall effect Linear magnetization dependence of the intrinsic anomalous Hall effect

2006-06-14

arxiv.org/abs/cond-mat/0606354v1

Phys. Rev. Lett. 96, 037204 (2006)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

Scientific paper

10.1103/PhysRevLett.96.037204

The anomalous Hall effect is investigated experimentally and theoretically for ferromagnetic thin films of Mn$_5$Ge$_3$. We have separated the intrinsic and extrinsic contributions to the experimental anomalous Hall effect, and calculated the intrinsic anomalous Hall conductivity from the Berry curvature of the Bloch states using first-principles methods. The intrinsic anomalous Hall conductivity depends linearly on the magnetization, which can be understood from the long wavelength fluctuations of the spin orientation at finite temperatures. The quantitative agreement between theory and experiment is remarkably good, not only near 0 K, but also at finite temperatures, up to about ~ 240 K (0.8 T$_C$})

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