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Ab Initio theory of the Gilbert damping in random ferromagnetic alloys

SYSNO ASEP	0482219
Document Type	J - Journal Article
R&D Document Type	Journal Article
Subsidiary J	Článek ve WOS
Title	Ab Initio theory of the Gilbert damping in random ferromagnetic alloys
Author(s)	Drchal, Václav (FZU-D)_{RID, ORCID} Turek, I. (CZ) Kudrnovský, Josef (FZU-D)_{RID, ORCID}
Number of authors	3
Source Title	Journal of Superconductivity and Novel Magnetism. - : Springer - ISSN 1557-1939 Roč. 30, č. 6 (2017), s. 1669-1672
Number of pages	4 s.
Language	eng - English
Country	US - United States
Keywords	Gilbert damping ; ferromagnetic alloys ; ab initio ; nonlocal torques
Subject RIV	BM - Solid Matter Physics ; Magnetism
OECD category	Condensed matter physics (including formerly solid state physics, supercond.)
R&D Projects	GA15-13436S GA ČR - Czech Science Foundation (CSF)
Institutional support	FZU-D - RVO:68378271
UT WOS	000401348600037
EID SCOPUS	84982105686
DOI	10.1007/s10948-016-3662-4
Annotation	We present an ab initio theory of the Gilbert damping in ferromagnetic alloys with substitutional disorder. The theory is based on nonlocal torques represented by nonrandom, site-off-dagonal, and spin-independent matrices. The formalism is developed for the relativistic tight-binding linear muffin-tin orbital (TB-LMTO) method and the coherent potential approximation (CPA). The CPA vertex corrections play a crucial role for the internal consistency of the theory and for its exact equivalence to other first-principles approaches based on random local torques. The theory is illustrated by calculations for various random transition metal alloys. Results are in a reasonable agreement with other calculations and accessible experimental data.
Workplace	Institute of Physics
Contact	Kristina Potocká, potocka@fzu.cz, Tel.: 220 318 579
Year of Publishing	2018

Number of the records: 1