Spin-Orbit Strength Driven Crossover between Intrinsic and Extrinsic Mechanisms of the Anomalous Hall Effect in the Epitaxial L1(0)-Ordered Ferromagnets FePd and FePt

Seemann, K. M. and Mokrousov, Y. and Aziz, A. and Miguel, J. and Kronast, F. and Kuch, W. and Blamire, M. G. and Hindmarch, A. T. and Hickey, B. J. and Souza, I. and Marrows, C. H. (2010) Spin-Orbit Strength Driven Crossover between Intrinsic and Extrinsic Mechanisms of the Anomalous Hall Effect in the Epitaxial L1(0)-Ordered Ferromagnets FePd and FePt. Physical review letters, 104 (7). ISSN 0031-9007

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Abstract

We determine the composition of intrinsic as well as extrinsic contributions to the anomalous Hall effect (AHE) in the isoelectronic L1(0) FePd and FePt alloys. We show that the AHE signal in our 30 nm thick epitaxially deposited films of FePd is mainly due to an extrinsic side jump, while in the epitaxial FePt films of the same thickness and degree of order the intrinsic contribution is dominating over the extrinsic mechanisms of the AHE. We relate this crossover to the difference in spin-orbit strength of Pt and Pd atoms and suggest that this phenomenon can be used for tuning the origins of the AHE in complex alloys.

Item Type:
Journal Article
Journal or Publication Title:
Physical review letters
Additional Information:
© 2010 The American Physical Society
Uncontrolled Keywords:
/dk/atira/pure/subjectarea/asjc/3100
Subjects:
ID Code:
63533
Deposited By:
Deposited On:
19 Apr 2013 10:19
Refereed?:
Yes
Published?:
Published
Last Modified:
27 Sep 2020 01:43