dc.contributor.author | Rongione, E. | |
dc.contributor.author | Gueckstock, O. | |
dc.contributor.author | Mattern, M. | |
dc.contributor.author | Gomonay, O. | |
dc.contributor.author | Meer, H. | |
dc.contributor.author | Schmitt, C. | |
dc.contributor.author | Ramos, R. | |
dc.contributor.author | Kikkawa, T. | |
dc.contributor.author | Mičica, M. | |
dc.contributor.author | Saitoh, E. | |
dc.contributor.author | Sinova, J. | |
dc.contributor.author | Jaffrès, H. | |
dc.contributor.author | Mangeney, J. | |
dc.contributor.author | Goennenwein, S.T.B. | |
dc.contributor.author | Geprägs, S. | |
dc.contributor.author | Kampfrath, T. | |
dc.contributor.author | Kläui, Mathias Michael | |
dc.contributor.author | Bargheer, M. | |
dc.contributor.author | Seifert, T.S. | |
dc.contributor.author | Dhillon, S. | |
dc.contributor.author | Lebrun, R. | |
dc.date.accessioned | 2023-09-18T07:41:22Z | |
dc.date.available | 2023-09-18T07:41:22Z | |
dc.date.created | 2023-04-19T09:59:51Z | |
dc.date.issued | 2023 | |
dc.identifier.issn | 2041-1723 | |
dc.identifier.uri | https://hdl.handle.net/11250/3089979 | |
dc.description.abstract | Antiferromagnetic materials have been proposed as new types of narrowband THz spintronic devices owing to their ultrafast spin dynamics. Manipulating coherently their spin dynamics, however, remains a key challenge that is envisioned to be accomplished by spin-orbit torques or direct optical excitations. Here, we demonstrate the combined generation of broadband THz (incoherent) magnons and narrowband (coherent) magnons at 1 THz in low damping thin films of NiO/Pt. We evidence, experimentally and through modeling, two excitation processes of spin dynamics in NiO: an off-resonant instantaneous optical spin torque in (111) oriented films and a strain-wave-induced THz torque induced by ultrafast Pt excitation in (001) oriented films. Both phenomena lead to the emission of a THz signal through the inverse spin Hall effect in the adjacent heavy metal layer. We unravel the characteristic timescales of the two excitation processes found to be < 50 fs and > 300 fs, respectively, and thus open new routes towards the development of fast opto-spintronic devices based on antiferromagnetic materials. | en_US |
dc.language.iso | eng | en_US |
dc.publisher | Springer Nature | en_US |
dc.rights | Navngivelse 4.0 Internasjonal | * |
dc.rights.uri | http://creativecommons.org/licenses/by/4.0/deed.no | * |
dc.title | Emission of coherent THz magnons in an antiferromagnetic insulator triggered by ultrafast spin–phonon interactions | en_US |
dc.title.alternative | Emission of coherent THz magnons in an antiferromagnetic insulator triggered by ultrafast spin–phonon interactions | en_US |
dc.type | Peer reviewed | en_US |
dc.type | Journal article | en_US |
dc.description.version | publishedVersion | en_US |
dc.source.volume | 14 | en_US |
dc.source.journal | Nature Communications | en_US |
dc.source.issue | 1 | en_US |
dc.identifier.doi | 10.1038/s41467-023-37509-6 | |
dc.identifier.cristin | 2141760 | |
dc.source.articlenumber | 1818 | en_US |
cristin.ispublished | true | |
cristin.fulltext | original | |
cristin.qualitycode | 2 | |