The spin-disorder resistivity: The disordered local moment approach

0522380 - FZÚ 2020 RIV CH eng C - Konferenční příspěvek (zahraniční konf.)
Kudrnovský, Josef - Drchal, Václav - Turek, Ilja - Wagenknecht, D. - Khmelevskyi, S.
The spin-disorder resistivity: The disordered local moment approach.
Solid State Phenomena. Vol. 289. Zürich: Trans Tech Publications Ltd., 2019 - (Bauer, E.; Muller, H.; Fruchart, H.), s. 185-191. ISBN 978-303571302-2. E-ISSN 1662-9779.
[International Conference on Solid Compounds of Transition Elements (SCTE 2018) /21./. Vienna (AT), 25.03.2018-29.03.2018]
Grant CEP: GA ČR GA18-07172S
Institucionální podpora: RVO:68378271 ; RVO:68081723
Klíčová slova: spin-disorder resistivity * disordered local moment * first-principles * magnetic metals and Heusler alloys * Earth’s core conductivity
Obor OECD: Condensed matter physics (including formerly solid state physics, supercond.); Condensed matter physics (including formerly solid state physics, supercond.) (UFM-A)

The spin-disorder resistivity (SDR) of a broad range of magnetic materials, both ordered and disordered, is reviewed. We identify the SDR at the critical temperature with the residual resistivity of the corresponding system evaluated in the framework of the disordered local moment (DLM) model. The underlying electronic structure is determined in the framework of the tight-binding linear muffin- tin orbital method which employs the coherent potential approximation to describe the DLM state and chemical disorder. The DLM fixed-spin moment method is used in the case when the DLM moment collapses. The Kubo-Greenwood approach is employed to estimate the resistivity of the DLM state. Formalism is applied to Fe and Ni and its alloys, Heusler alloys, and ordered ferromagnetic and anti- ferromagnetic alloys. Finally, the SDR of the Earth’s core will be studied using the same formalism. Calculations are compared with available experimental data.

Trvalý link: http://hdl.handle.net/11104/0307868