Publications in Scientific Journals:
J. Kudrnovsky, V. Drchal, I. Turek, S. Khmelevskyi, J. Glasbrenner, K. Belashchenko:
"The disordered local moment approach to the spin-disorder resistivity of metallic ferromagnets";
EPJ Web of Conferences,
The spin-disorder resistivity (SDR) of transition metal ferromagnets (Fe, Co, Ni), rare-earth ferromagnet Gd, and Ni2MnSn Heusler alloy is determined from ﬁrst principles. We identify the SDR at the Curie temperature with the residual resistivity of the corresponding system evaluated in the framework of the disordered local moment (DLM) model which has the zero spin-spin correlation function. The underlying electronic structure is determined in the framework of the tight-binding linear muﬃn-tin orbital method which employs the coherent potential approximation (CPA) to describe the DLM state. The DLM ﬁxed-spin moment approach is used in the case when the DLM moment collapses. The electronic structure of hcp-Gd is determined using both the open core and LDA+U approaches. The Kubo-Greenwood approach is used to estimate the resistivity. For bcc-Fe and Ni2MnSn alloy we shall also estimate the temperature-dependent of resistivity below the Curie temperature using a semiempirical approach. Calculations are compared with the supercell Landauer-Büttiker approach developed recently as well as with available experimental data and overall good agreement is obtained.
Created from the Publication Database of the Vienna University of Technology.