Ab-Initio Real-Time Magnon Dynamics in Ferromagnetic and Ferrimagnetic Systems
dc.bibliographicCitation.firstPage | 1900654 | eng |
dc.bibliographicCitation.issue | 7 | eng |
dc.bibliographicCitation.journalTitle | Physica status solidi : B, Basic research | eng |
dc.bibliographicCitation.volume | 257 | eng |
dc.contributor.author | Singh, Nisha | |
dc.contributor.author | Elliott, Peter | |
dc.contributor.author | Dewhurst, J. Kay | |
dc.contributor.author | Gross, E.K.U. | |
dc.date.accessioned | 2021-12-03T07:04:04Z | |
dc.date.available | 2021-12-03T07:04:04Z | |
dc.date.issued | 2020 | |
dc.description.abstract | Magnonics—an emerging field of physics—is based on the collective excitations of ordered spins called spin waves. These low-energy excitations carry pure spin currents, paving the way for future technological devices working at low energies and on ultrafast timescales. The traditional ab-initio approach to predict these spin-wave energies is based on linear-response time-dependent density functional theory (LR-TDDFT) in the momentum and frequency regime. Herein, the simulation of magnon dynamics using real-time time-dependent density functional theory is demonstrated, thus extending the domain of ab-initio magnonic studies. Unlike LR-TDDFT, this enables us to observe atom-resolved dynamics of individual magnon modes and, using a supercell approach, the dynamics of several magnon modes can be observed simultaneously. The energies of these magnon modes are concurrent with those found using LR-TDDFT. Next, the complex dynamics of the superposition of magnon modes is studied, before finally studying the element-resolved modes in multisublattice magnetic systems. | eng |
dc.description.version | publishedVersion | eng |
dc.identifier.uri | https://oa.tib.eu/renate/handle/123456789/7604 | |
dc.identifier.uri | https://doi.org/10.34657/6651 | |
dc.language.iso | eng | eng |
dc.publisher | Weinheim : Wiley-VCH | eng |
dc.relation.doi | https://doi.org/10.1002/pssb.201900654 | |
dc.relation.essn | 1521-3951 | |
dc.rights.license | CC BY 4.0 Unported | eng |
dc.rights.uri | https://creativecommons.org/licenses/by/4.0/ | eng |
dc.subject.ddc | 530 | eng |
dc.subject.other | element-specific modes | eng |
dc.subject.other | real-time magnons | eng |
dc.subject.other | real-time time-dependent density functional theory | eng |
dc.title | Ab-Initio Real-Time Magnon Dynamics in Ferromagnetic and Ferrimagnetic Systems | eng |
dc.type | Article | eng |
dc.type | Text | eng |
tib.accessRights | openAccess | eng |
wgl.contributor | MBI | eng |
wgl.subject | Physik | eng |
wgl.type | Zeitschriftenartikel | eng |
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