Ab initio investigation of light-induced relativistic spin-flip effects in magneto-optics
Dateien
Datum
Autor:innen
Herausgeber:innen
ISSN der Zeitschrift
Electronic ISSN
ISBN
Bibliografische Daten
Verlag
Schriftenreihe
Auflagebezeichnung
DOI (zitierfähiger Link)
ArXiv-ID
Internationale Patentnummer
Angaben zur Forschungsförderung
Projekt
Open Access-Veröffentlichung
Sammlungen
Core Facility der Universität Konstanz
Titel in einer weiteren Sprache
Publikationstyp
Publikationsstatus
Erschienen in
Zusammenfassung
Excitation of a metallic ferromagnet such as Ni with an intensive femtosecond laser pulse causes an ultrafast demagnetization within approximately 300 fs. It was proposed that the ultrafast demagnetization measured in femtosecond magneto-optical experiments could be due to relativistic light-induced processes. We perform an ab initio investigation of the influence of relativistic effects on the magneto-optical response of Ni. To this end, first, we develop a response theory formulation of the additional appearing ultrarelativistic terms in the Foldy-Wouthuysen transformed Dirac Hamiltonian due to the electromagnetic field, and second, we compute the influence of relativistic light-induced spin-flip transitions on the magneto-optics. Our ab initio calculations of relativistic spin-flip optical excitations predict that these can give only a very small contribution (≤0.1%) to the laser-induced magnetization change in Ni.
Zusammenfassung in einer weiteren Sprache
Fachgebiet (DDC)
Schlagwörter
Konferenz
Rezension
Zitieren
ISO 690
MONDAL, Ritwik, Marco BERRITTA, Karel CARVA, Peter M. OPPENEER, 2015. Ab initio investigation of light-induced relativistic spin-flip effects in magneto-optics. In: Physical Review B. 2015, 91(17), 174415. ISSN 1098-0121. eISSN 1550-235X. Available under: doi: 10.1103/PhysRevB.91.174415BibTex
@article{Mondal2015initi-46214, year={2015}, doi={10.1103/PhysRevB.91.174415}, title={Ab initio investigation of light-induced relativistic spin-flip effects in magneto-optics}, number={17}, volume={91}, issn={1098-0121}, journal={Physical Review B}, author={Mondal, Ritwik and Berritta, Marco and Carva, Karel and Oppeneer, Peter M.}, note={Article Number: 174415} }
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/123456789/46214"> <bibo:uri rdf:resource="https://kops.uni-konstanz.de/handle/123456789/46214"/> <dcterms:abstract xml:lang="eng">Excitation of a metallic ferromagnet such as Ni with an intensive femtosecond laser pulse causes an ultrafast demagnetization within approximately 300 fs. It was proposed that the ultrafast demagnetization measured in femtosecond magneto-optical experiments could be due to relativistic light-induced processes. We perform an ab initio investigation of the influence of relativistic effects on the magneto-optical response of Ni. To this end, first, we develop a response theory formulation of the additional appearing ultrarelativistic terms in the Foldy-Wouthuysen transformed Dirac Hamiltonian due to the electromagnetic field, and second, we compute the influence of relativistic light-induced spin-flip transitions on the magneto-optics. Our ab initio calculations of relativistic spin-flip optical excitations predict that these can give only a very small contribution (≤0.1%) to the laser-induced magnetization change in Ni.</dcterms:abstract> <dcterms:issued>2015</dcterms:issued> <void:sparqlEndpoint rdf:resource="http://localhost/fuseki/dspace/sparql"/> <dc:creator>Oppeneer, Peter M.</dc:creator> <dcterms:available rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2019-07-04T09:39:57Z</dcterms:available> <dc:language>eng</dc:language> <dc:contributor>Mondal, Ritwik</dc:contributor> <dc:creator>Carva, Karel</dc:creator> <dc:creator>Mondal, Ritwik</dc:creator> <dcterms:title>Ab initio investigation of light-induced relativistic spin-flip effects in magneto-optics</dcterms:title> <dspace:isPartOfCollection rdf:resource="https://kops.uni-konstanz.de/server/rdf/resource/123456789/41"/> <dc:contributor>Berritta, Marco</dc:contributor> <foaf:homepage rdf:resource="http://localhost:8080/"/> <dc:contributor>Carva, Karel</dc:contributor> <dc:creator>Berritta, Marco</dc:creator> <dcterms:isPartOf rdf:resource="https://kops.uni-konstanz.de/server/rdf/resource/123456789/41"/> <dc:date rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2019-07-04T09:39:57Z</dc:date> <dc:contributor>Oppeneer, Peter M.</dc:contributor> </rdf:Description> </rdf:RDF>