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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

Research output: Contribution to journalJournal article

Published

  • K. M. Seemann
  • Y. Mokrousov
  • A. Aziz
  • J. Miguel
  • F. Kronast
  • W. Kuch
  • M. G. Blamire
  • A. T. Hindmarch
  • B. J. Hickey
  • I. Souza
  • C. H. Marrows
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Journal publication date19/02/2010
JournalPhysical review letters
Journal number7
Volume104
Number of pages4
Original languageEnglish

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.

Bibliographic note

© 2010 The American Physical Society