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Exchange and spin-orbit induced phenomena in diluted (Ga, Mn) As from first principles
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SYSNO ASEP 0470822 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Exchange and spin-orbit induced phenomena in diluted (Ga, Mn) As from first principles Author(s) Kudrnovský, Josef (FZU-D) RID, ORCID
Drchal, Václav (FZU-D) RID, ORCID
Turek, Ilja (UFM-A) RID, ORCIDNumber of authors 3 Article number 054428 Source Title Physical Review B. - : American Physical Society - ISSN 2469-9950
Roč. 94, č. 5 (2016), 1-8Number of pages 8 s. Language eng - English Country US - United States Keywords GaMnAs ; Curie temperature ; spin-stiffness ; anisotropic magnetoresistance ; anomalous Hall effect ; Gilbert damping Subject RIV BM - Solid Matter Physics ; Magnetism R&D Projects GA15-13436S GA ČR - Czech Science Foundation (CSF) Institutional support FZU-D - RVO:68378271 ; UFM-A - RVO:68081723 UT WOS 000381998600004 EID SCOPUS 84985995255 DOI https://doi.org/10.1103/PhysRevB.94.054428 Annotation Physical properties induced by exchange interactions (Curie temperature and spin stiffness) and spin-orbit coupling (anomalous Hall effect, anisotropic magnetoresistance, and Gilbert damping) in the diluted (Ga, Mn) As ferromagnetic semiconductor are studied from first principles. Recently developed Kubo-Bastin transport theory and nonlocal torque operator formulation of the Gilbert damping as formulated in the tight-binding linear muffintin orbital method are used. The first-principles Liechtenstein mapping is employed to construct an effective Heisenberg Hamiltonian and to estimate Curie temperature and spin stiffness in the real-space random-phase approximation. Good agreement of calculated physical quantities with experiments on well-annealed samples containing only a small amount of compensating defects is obtained. Workplace Institute of Physics Contact Kristina Potocká, potocka@fzu.cz, Tel.: 220 318 579 Year of Publishing 2017
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