Dissipationless Anomalous Hall Current in $Fe_{100-x}(SiO_2)_x$ Films

Details Dissipationless Anomalous Hall Current in $Fe_{100-x}(SiO_2)_x$ Films Dissipationless Anomalous Hall Current in $Fe_{100-x}(SiO_2)_x$ Films

2010-04-13

arxiv.org/abs/1004.2105v1

Phys. Rev. B 83, 205311 (2011)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

17 pages, 5 figures; http://link.aps.org/doi/10.1103/PhysRevB.83.205311

Scientific paper

10.1103/PhysRevB.83.205311

The observation of dissipationless anomalous Hall current is one of the experimental evidences to confirm the intrinsic origin of anomalous Hall effect. To study the origin of anomalous Hall effect in iron, Fe$_{100-x}$(SiO$_{2}$)$_{x}$ granular films with volume fraction of SiO$_{2}$ 0\le x \le 40.51 were fabricated using co-sputtering. Hall and longitudinal resistivities were measured in the temperature range 5 to 350 K with magnetic fields up to 5 Tesla. As x increased from 0 to 40.51, the anomalous Hall resistivity and longitudinal resistivity increased about 4 and 3 orders in magnitude, respectively. Analysis of the results revealed that the normalized anomalous Hall conductivity is a constant for all the samples, the evidence of dissipationless anomalous Hall current in Fe.

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