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Influence of intersublattice coupling on the terahertz nutation spin dynamics in antiferromagnets
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SYSNO ASEP 0552513 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Influence of intersublattice coupling on the terahertz nutation spin dynamics in antiferromagnets Author(s) Mondal, Ritwik (FZU-D) ORCID
Oppeneer, P.M. (SE)Number of authors 2 Article number 104405 Source Title Physical Review B. - : American Physical Society - ISSN 2469-9950
Roč. 104, č. 10 (2021)Number of pages 8 s. Language eng - English Country US - United States Keywords inertial Landau-Lifshitz-Gilbert spin dynamics ; ferromagnetic resonance ; antiferromagnetic resonance ; nutation resonance ; antiferromagnetic spintronic Subject RIV BM - Solid Matter Physics ; Magnetism OECD category Condensed matter physics (including formerly solid state physics, supercond.) Method of publishing Open access Institutional support FZU-D - RVO:68378271 UT WOS 000692040300002 EID SCOPUS 85114485566 DOI 10.1103/PhysRevB.104.104405 Annotation Spin-nutation resonance has been well explored in one-sublattice ferromagnets. Here, we investigate the spin nutation in two-sublattice antiferromagnets as well as, for comparison, ferrimagnets with inter- and intrasub lattice nutation coupling. In particular, we derive the susceptibility of the two-sublattice magnetic system in response to an applied external magnetic field. To this end, the antiferromagnetic and ferrimagnetic (sub-THz) precession and THz nutation resonance frequencies are calculated. Our results show that the precession reso nance frequencies and effective damping decrease with intrasublattic nutation coupling, while they increase with intersublattice nutation in an antiferromagnet. Workplace Institute of Physics Contact Kristina Potocká, potocka@fzu.cz, Tel.: 220 318 579 Year of Publishing 2022 Electronic address http://hdl.handle.net/11104/0327670
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