Publikation: Néel vector switching and terahertz spin-wave excitation in Mn2Au due to femtosecond spin-transfer torques
Dateien
Datum
Autor:innen
Herausgeber:innen
ISSN der Zeitschrift
Electronic ISSN
ISBN
Bibliografische Daten
Verlag
Schriftenreihe
Auflagebezeichnung
URI (zitierfähiger Link)
DOI (zitierfähiger Link)
Internationale Patentnummer
Link zur Lizenz
Angaben zur Forschungsförderung
Projekt
Open Access-Veröffentlichung
Sammlungen
Core Facility der Universität Konstanz
Titel in einer weiteren Sprache
Publikationstyp
Publikationsstatus
Erschienen in
Zusammenfassung
Efficient and fast manipulation of antiferromagnets has to date remained a challenging task, hindering their application in spintronic devices. For ultrafast operation of such devices, it is highly desirable to be able to control the antiferromagnetic order within picoseconds—a timescale that is difficult to achieve with electrical circuits. Here, we demonstrate that bursts of spin-polarized hot-electron currents emerging due to laser-induced ultrafast demagnetization are able to efficiently excite spin dynamics in antiferromagnetic Mn2Au by exerting a spin-transfer torque on femtosecond timescales. We combine quantitative superdiffusive transport and atomistic spin-model calculations to describe a spin-valve-type trilayer consisting of Fe|Cu|Mn2Au. Our results demonstrate that femtosecond spin-transfer torques can switch the Mn2Au layer within a few picoseconds. In addition, we find that spin waves with high frequencies up to several THz can be excited in Mn2Au.
Zusammenfassung in einer weiteren Sprache
Fachgebiet (DDC)
Schlagwörter
Konferenz
Rezension
Zitieren
ISO 690
WEISSENHOFER, Markus, Francesco FOGGETTI, Ulrich NOWAK, Peter M. OPPENEER, 2023. Néel vector switching and terahertz spin-wave excitation in Mn2Au due to femtosecond spin-transfer torques. In: Physical Review B. American Physical Society (APS). 2023, 107(17), 174424. ISSN 2469-9950. eISSN 2469-9969. Available under: doi: 10.1103/physrevb.107.174424BibTex
@article{Weienhofer2023vecto-66942, year={2023}, doi={10.1103/physrevb.107.174424}, title={Néel vector switching and terahertz spin-wave excitation in Mn<sub>2</sub>Au due to femtosecond spin-transfer torques}, number={17}, volume={107}, issn={2469-9950}, journal={Physical Review B}, author={Weißenhofer, Markus and Foggetti, Francesco and Nowak, Ulrich and Oppeneer, Peter M.}, note={Article Number: 174424} }
RDF
<rdf:RDF xmlns:dcterms="http://purl.org/dc/terms/" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns:bibo="http://purl.org/ontology/bibo/" xmlns:dspace="http://digital-repositories.org/ontologies/dspace/0.1.0#" xmlns:foaf="http://xmlns.com/foaf/0.1/" xmlns:void="http://rdfs.org/ns/void#" xmlns:xsd="http://www.w3.org/2001/XMLSchema#" > <rdf:Description rdf:about="https://kops.uni-konstanz.de/server/rdf/resource/123456789/66942"> <dc:contributor>Nowak, Ulrich</dc:contributor> <dc:creator>Oppeneer, Peter M.</dc:creator> <dc:contributor>Oppeneer, Peter M.</dc:contributor> <dcterms:hasPart rdf:resource="https://kops.uni-konstanz.de/bitstream/123456789/66942/1/Wei%c3%9fenhofer_2-yjsa4hpn9gwu8.pdf"/> <void:sparqlEndpoint rdf:resource="http://localhost/fuseki/dspace/sparql"/> <dc:creator>Nowak, Ulrich</dc:creator> <dcterms:rights rdf:resource="http://creativecommons.org/licenses/by/4.0/"/> <dc:contributor>Foggetti, Francesco</dc:contributor> <dspace:isPartOfCollection rdf:resource="https://kops.uni-konstanz.de/server/rdf/resource/123456789/41"/> <dcterms:issued>2023</dcterms:issued> <bibo:uri rdf:resource="https://kops.uni-konstanz.de/handle/123456789/66942"/> <dc:creator>Foggetti, Francesco</dc:creator> <dcterms:isPartOf rdf:resource="https://kops.uni-konstanz.de/server/rdf/resource/123456789/41"/> <dc:contributor>Weißenhofer, Markus</dc:contributor> <dspace:hasBitstream rdf:resource="https://kops.uni-konstanz.de/bitstream/123456789/66942/1/Wei%c3%9fenhofer_2-yjsa4hpn9gwu8.pdf"/> <dc:date rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2023-05-23T06:20:39Z</dc:date> <dcterms:abstract>Efficient and fast manipulation of antiferromagnets has to date remained a challenging task, hindering their application in spintronic devices. For ultrafast operation of such devices, it is highly desirable to be able to control the antiferromagnetic order within picoseconds—a timescale that is difficult to achieve with electrical circuits. Here, we demonstrate that bursts of spin-polarized hot-electron currents emerging due to laser-induced ultrafast demagnetization are able to efficiently excite spin dynamics in antiferromagnetic Mn<sub>2</sub>Au by exerting a spin-transfer torque on femtosecond timescales. We combine quantitative superdiffusive transport and atomistic spin-model calculations to describe a spin-valve-type trilayer consisting of Fe|Cu|Mn<sub>2</sub>Au. Our results demonstrate that femtosecond spin-transfer torques can switch the Mn<sub>2</sub>Au layer within a few picoseconds. In addition, we find that spin waves with high frequencies up to several THz can be excited in Mn<sub>2</sub>Au.</dcterms:abstract> <dc:creator>Weißenhofer, Markus</dc:creator> <dcterms:title>Néel vector switching and terahertz spin-wave excitation in Mn<sub>2</sub>Au due to femtosecond spin-transfer torques</dcterms:title> <dc:language>eng</dc:language> <dcterms:available rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2023-05-23T06:20:39Z</dcterms:available> <foaf:homepage rdf:resource="http://localhost:8080/"/> <dc:rights>Attribution 4.0 International</dc:rights> </rdf:Description> </rdf:RDF>