Journal Article

PreJuSER-22141

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Disentangling the Physical Contributions to the Electrical Resistance in Magnetic Domain Walls: A Multiscale Study

Seemann, K. M.FZJ* ; Garcia-Sanchez, F. ; Kronast, F. ; Miguel, J. ; Kakay, A. ; Schneider, C. M.FZJ* ; Hertel, R. ; Freimuth, F.FZJ* ; Mokrousov, Y.FZJ* ; Blügel, S.FZJ*

2012
APS College Park, Md.

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Please use a persistent id in citations: http://hdl.handle.net/2128/7506  doi:10.1103/PhysRevLett.108.077201

Abstract: We analyze the origin of the electrical resistance arising in domain walls of perpendicularly magnetized materials by considering a superposition of anisotropic magnetoresistance and the resistance implied by the magnetization chirality. The domain wall profiles of L1(0)-FePd and L1(0)-FePt are determined by micromagnetic simulations based on which we perform first-principles calculations to quantify electron transport through the core and closure region of the walls. The wall resistance, being twice as high in L1(0)-FePd than in L1(0)-FePt, is found to be clearly dominated in both cases by a high gradient of magnetization rotation, which agrees well with experimental observations.

Keyword(s): J

Note: K. M. S. thanks W. Kuch, C. H. Marrows, B. J. Hickey, A. Aziz, and M. G. Blamire and for fruitful discussions. F. G. thanks the Ministerio de Ciencia e Innovacion and the Fundacion Espanola para la Ciencia y la Tecnologia of Spain for financial support. We gratefully acknowledge S. Borm and E. Westphal for discussions and assistance. F. F. and Y. M. thank the HGF-YIG program VH-NG-513 and the Julich Supercomputing Centre for computational time.

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Contributing Institute(s):

1. Quanten-Theorie der Materialien (PGI-1)
2. Quanten-Theorie der Materialien (IAS-1)
3. Jülich-Aachen Research Alliance - Fundamentals of Future Information Technology (JARA-FIT)
4. Jülich-Aachen Research Alliance - Simulation Sciences (JARA-SIM)
5. Elektronische Eigenschaften (PGI-6)

Research Program(s):

1. Grundlagen für zukünftige Informationstechnologien (P42)

Appears in the scientific report 2012

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Database coverage:
; ; ; Current Contents - Social and Behavioral Sciences ; JCR ; NCBI Molecular Biology Database ; Nationallizenz ; SCOPUS ; Science Citation Index ; Science Citation Index Expanded ; Thomson Reuters Master Journal List ; Web of Science Core Collection

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