Ultrafast demagnetization dominates fluence dependence of magnetic scattering at Co M edges

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dc.contributor.authorSchneider, Michael
dc.contributor.authorPfau, Bastian
dc.contributor.authorGünther, Christian M.
dc.contributor.authorKorff Schmising, Clemens von
dc.contributor.authorWeder, David
dc.contributor.authorGeilhufe, Jan
dc.contributor.authorPerron, Jonathan
dc.contributor.authorCapotondi, Flavio
dc.contributor.authorPedersoli, Emanuele
dc.contributor.authorManfredda, Michele
dc.contributor.authorHennecke, Martin
dc.contributor.authorVodungbo, Boris
dc.contributor.authorLüning, Jan
dc.contributor.authorEisebitt, Stefan
dc.date.accessioned2020-10-26T08:47:20Z
dc.date.available2020-10-26T08:47:20Z
dc.date.issued2020-09-15
dc.description.abstractWe systematically study the fluence dependence of the resonant scattering cross-section from magnetic domains in Co/Pd-based multilayers. Samples are probed with single extreme ultraviolet (XUV) pulses of femtosecond duration tuned to the Co M3,2 absorption resonances using the FERMI@Elettra free-electron laser. We report quantitative data over 3 orders of magnitude in fluence, covering 16  mJ/cm2/pulse to 10 000  mJ/cm2/pulse with pulse lengths of 70 fs and 120 fs. A progressive quenching of the diffraction cross-section with fluence is observed. Compression of the same pulse energy into a shorter pulse—implying an increased XUV peak electric field—results in a reduced quenching of the resonant diffraction at the Co M3,2 edge. We conclude that the quenching effect observed for resonant scattering involving the short-lived Co 3p core vacancies is noncoherent in nature. This finding is in contrast to previous reports investigating resonant scattering involving the longer-lived Co 2p states, where stimulated emission has been found to be important. A phenomenological model based on XUV-induced ultrafast demagnetization is able to reproduce our entire set of experimental data and is found to be consistent with independent magneto-optical measurements of the demagnetization dynamics on the same samples.en
dc.identifier.eissn1079-7114
dc.identifier.issn0031-9007
dc.identifier.urihttps://depositonce.tu-berlin.de/handle/11303/11764
dc.identifier.urihttp://dx.doi.org/10.14279/depositonce-10652
dc.language.isoenen
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/en
dc.subject.ddc530 Physikde
dc.subject.otherdemagnetizationen
dc.subject.othermagnetic multilayersen
dc.subject.otherfree-electron lasersen
dc.subject.othermagnetismen
dc.titleUltrafast demagnetization dominates fluence dependence of magnetic scattering at Co M edgesen
dc.typeArticleen
dc.type.versionpublishedVersionen
dcterms.bibliographicCitation.articlenumber127201en
dcterms.bibliographicCitation.doi10.1103/PhysRevLett.125.127201en
dcterms.bibliographicCitation.issue12en
dcterms.bibliographicCitation.journaltitlePhysical review Ben
dcterms.bibliographicCitation.originalpublishernameAmerican Physical Societyen
dcterms.bibliographicCitation.originalpublisherplaceWoodbury, NYen
dcterms.bibliographicCitation.volume125en
tub.accessrights.dnbfreeen
tub.affiliationFak. 2 Mathematik und Naturwissenschaften::Inst. Optik und Atomare Physikde
tub.affiliation.facultyFak. 2 Mathematik und Naturwissenschaftende
tub.affiliation.instituteInst. Optik und Atomare Physikde
tub.publisher.universityorinstitutionTechnische Universität Berlinen

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