Elementary depinning processes of magnetic domain walls under fields and currents

The probability laws associated to domain wall depinning under fields and currents have been studied in NiFe and FePt nanowires. Three basic domain wall depinning processes, associated to different potential landscapes, are found to appear identically in those systems with very different anisotropie...

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Published inScientific reports Vol. 4; no. 1; p. 6509
Main Authors Nguyen, V D, Torres, W Savero, Laczkowski, P, Marty, A, Jamet, M, Beigné, C, Notin, L, Vila, L, Attané, J P
Format Journal Article
LanguageEnglish
Published England Nature Publishing Group 01.10.2014
Subjects
Behavior
Condensed Matter
Energy
Materials Science
Nanotechnology
Nanowires
Physics
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Summary:The probability laws associated to domain wall depinning under fields and currents have been studied in NiFe and FePt nanowires. Three basic domain wall depinning processes, associated to different potential landscapes, are found to appear identically in those systems with very different anisotropies. We show that these processes constitute the building blocks of any complex depinning mechanism. A Markovian analysis is proposed, that provides a unified picture of the depinning mechanism and an insight into the pinning potential landscape.
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PMCID: PMC4180821
ISSN:2045-2322
2045-2322
DOI:10.1038/srep06509