Disentangling the Physical Contributions to the Electrical Resistance in Magnetic Domain Walls: A Multiscale Study

K. M. Seemann, F. Garcia-Sanchez, F. Kronast, J. Miguel, A. Kákay, C. M. Schneider, R. Hertel, F. Freimuth, Y. Mokrousov, and S. Blügel
Phys. Rev. Lett. 108, 077201 – Published 13 February 2012
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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 L10FePd and L10FePt 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 L10FePd than in L10FePt, is found to be clearly dominated in both cases by a high gradient of magnetization rotation, which agrees well with experimental observations.

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  • Received 30 June 2011


© 2012 American Physical Society

Authors & Affiliations

K. M. Seemann1,*, F. Garcia-Sanchez1, F. Kronast2, J. Miguel3, A. Kákay1, C. M. Schneider1, and R. Hertel4

  • 1Peter Grünberg Institute, Forschungszentrum Jülich and Jülich-Aachen Research Alliance, D-52425 Jülich, Germany
  • 2Helmholtz-Zentrum Berlin für Materialien und Energie, Albert-Einstein-Strasse 15, Berlin, Germany
  • 3Diamond Light Source Ltd., Harwell Science and Innovation Campus, OX11 0DE Didcot, United Kingdom
  • 4Institut de Physique et Chimie des Matériaux de Strasbourg, Université de Strasbourg, CNRS UMR 7504, Strasbourg, France

F. Freimuth, Y. Mokrousov, and S. Blügel

  • Peter Grünberg Institute and Institute for Advanced Simulation, Forschungszentrum Jülich and Jülich-Aachen Research Alliance, D-52425 Jülich, Germany

  • *k.seemann@fz-juelich.de

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Vol. 108, Iss. 7 — 17 February 2012

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