Physics – Condensed Matter – Materials Science
Scientific paper
2011-12-05
Physics
Condensed Matter
Materials Science
5 pages, 4 figures
Scientific paper
The anomalous Hall effect (AHE) in L1(0) FePd(1-x)Pt(x) alloy films is studied both experimentally and theoretically. We find that the intrinsic contribution to the AHE can be continuously increased up to three-fold by increasing the Pt composition x whereas the extrinsic side-jump contribution hardly changes. We show that this chemical composition tuning of the intrinsic contribution is afforded by the stronger spin-orbit coupling strength on the Pd/Pt site when the lighter Pd atoms are replaced by the heavier Pt atoms. Our results provide a fuller understanding on the competing mechanisms of the AHE in ferromagnetic alloys, a hotly debated issue in solid state physics.
Guo Guang Yu
He Ping
Ma Liangping
Shi Zhengwei
Zhou Su-Min
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