Spin-disorder resistivity of ferromagnetic metals from first principles: The disordered-local-moment approach

J. Kudrnovský, V. Drchal, I. Turek, S. Khmelevskyi, J. K. Glasbrenner, and K. D. Belashchenko
Phys. Rev. B 86, 144423 – Published 31 October 2012

Abstract

The paramagnetic spin-disorder resistivity (SDR) of transition-metal ferromagnets Fe, Co, Ni, ordered transition metal alloys Ni3Mn and Fe3Si as well as Ni2MnX (X=In,Sn,Sb) Heusler alloys is determined from first principles. SDR is evaluated similar to the residual resistivity by using the disordered local moment (DLM) model combined with the Kubo-Greenwood linear response calculation. The electronic structure is determined within the tight-binding linear muffin-tin orbital method and the coherent potential approximation (CPA) applied to the DLM state. We also estimate the temperature dependence of the resistivity below the Curie temperature using a simple model. The results agree well with the supercell Landauer-Büttiker calculations and, generally, with experimental data. For the Ni2MnSb Heusler alloy it is necessary to include substitutional disorder of B2-type to explain the experimental data.

  • Figure
  • Received 26 July 2012

DOI:https://doi.org/10.1103/PhysRevB.86.144423

©2012 American Physical Society

Authors & Affiliations

J. Kudrnovský and V. Drchal

  • Institute of Physics, Academy of Sciences of the Czech Republic, CZ-182 21 Praha 8, Czech Republic

I. Turek

  • Charles University, Faculty of Mathematics and Physics, Department of Condensed Matter Physics, Ke Karlovu 5, CZ-121 16 Praha 2, Czech Republic

S. Khmelevskyi

  • CMS, Institute of Applied Physics, Vienna University of Technology, Gußhausstrasse 25a, Makartvilla, 1020 Vienna, Austria

J. K. Glasbrenner and K. D. Belashchenko

  • Department of Physics and Astronomy and Nebraska Center for Materials and Nanoscience, University of Nebraska, Lincoln, Nebraska 68588, USA

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Vol. 86, Iss. 14 — 1 October 2012

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