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

Authors

• Josef Kudrnovsky, Institute of Physics, Academy of Sciences of the Czech RepublicFollow
• V. Drchal, Institute of Physics, Academy of Sciences of the Czech Republic
• Ilja Turek, Charles University, Faculty of Mathematics and Physics, Department of Condensed Matter PhysicsFollow
• Sergii Khmelevskyi, CMS, Institute of Applied Physics, Vienna University of TechnologyFollow
• James K. Glasbrenner, University of Nebraska-LincolnFollow
• Kirill D. Belashchenko, University of Nebraska-LincolnFollow

Document Type

Article

Date of this Version

2012

Citation

PHYSICAL REVIEW B 86, 144423 (2012)

Comments

©2012 American Physical Society

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-Buttiker 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.