Publikation:

All-optical magnetization reversal by circularly-polarized laser pulses : Experiment and multiscale modeling

Lade...
Vorschaubild

Dateien

Vahaplar_All-optical magnetization .pdf
Vahaplar_All-optical magnetization .pdfGröße: 1.66 MBDownloads: 2927

Datum

2012

Autor:innen

Vahaplar, Kadir
Kalashnikova, Alexandra
Kimel, Alexey
Chantrell, Roy
Tsukamoto, Arata
Itoh, A.
Kirilyuk, Andrei

Herausgeber:innen

Kontakt

ISSN der Zeitschrift

Electronic ISSN

ISBN

Bibliografische Daten

Verlag

Schriftenreihe

Auflagebezeichnung

ArXiv-ID

Internationale Patentnummer

Angaben zur Forschungsförderung

Projekt

Open Access-Veröffentlichung
Open Access Green
Core Facility der Universität Konstanz

Gesperrt bis

Titel in einer weiteren Sprache

Publikationstyp
Zeitschriftenartikel
Publikationsstatus
Published

Erschienen in

Physical Review B. 2012, 85(10). ISSN 1098-0121. Available under: doi: 10.1103/PhysRevB.85.104402

Zusammenfassung

We present results of detailed experimental and theoretical studies of all-optical magnetization reversal by single circularly-polarized laser pulses in ferrimagnetic rare earth—transition metal (RE–TM) alloys GdxFe90−xCo10 (20%<x<28%). Using single-shot time-resolved magneto-optical microscopy and multiscale simulations, we identified and described the unconventional path followed by the magnetization during the reversal process. This reversal does not involve precessional motion of magnetization but is governed by the longitudinal relaxation and thus has a linear character. We demonstrate that this all-optically driven linear reversal can be modeled as a result of a two-fold impact of the laser pulse on the medium. First, due to absorption of the light and ultrafast laser-induced heating, the medium is brought to a highly nonequilibrium state. Simultaneously, due to the ultrafast inverse Faraday effect the circularly polarized laser pulse acts as an effective magnetic field of the amplitude up to ∼20 T. We show that the polarization-dependent reversal triggered by the circularly polarized light is feasible only in a narrow range (below 10%) of laser fluences. The duration of the laser pulse required for the reversal can be varied from ∼40 fs up to at least ∼1700 fs. We also investigate experimentally the role of the ferrimagnetic properties of GdFeCo in the all-optical reversal. In particular, the optimal conditions for the all-optical reversal are achieved just below the ferrimagnetic compensation temperature, where the magnetic information can be all-optically written by a laser pulse of minimal fluence and read out within just 30 ps. We argue that this is the fastest write-read event demonstrated for magnetic recording so far.

Zusammenfassung in einer weiteren Sprache

Fachgebiet (DDC)
530 Physik

Schlagwörter

optical magnetization reversal, circularly polarized, laser pulses, multiscale modeling

Konferenz

Rezension
undefined / . - undefined, undefined

Forschungsvorhaben

Organisationseinheiten

Zeitschriftenheft

Zugehörige Datensätze in KOPS

Zitieren

ISO 690VAHAPLAR, Kadir, Alexandra KALASHNIKOVA, Alexey KIMEL, Stefan GERLACH, Denise HINZKE, Ulrich NOWAK, Roy CHANTRELL, Arata TSUKAMOTO, A. ITOH, Andrei KIRILYUK, Theo RASING, 2012. All-optical magnetization reversal by circularly-polarized laser pulses : Experiment and multiscale modeling. In: Physical Review B. 2012, 85(10). ISSN 1098-0121. Available under: doi: 10.1103/PhysRevB.85.104402
BibTex
@article{Vahaplar2012Allop-18777,
  year={2012},
  doi={10.1103/PhysRevB.85.104402},
  title={All-optical magnetization reversal by circularly-polarized laser pulses : Experiment and multiscale modeling},
  number={10},
  volume={85},
  issn={1098-0121},
  journal={Physical Review B},
  author={Vahaplar, Kadir and Kalashnikova, Alexandra and Kimel, Alexey and Gerlach, Stefan and Hinzke, Denise and Nowak, Ulrich and Chantrell, Roy and Tsukamoto, Arata and Itoh, A. and Kirilyuk, Andrei and Rasing, Theo}
}
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/123456789/18777">
    <dc:creator>Itoh, A.</dc:creator>
    <dc:contributor>Gerlach, Stefan</dc:contributor>
    <foaf:homepage rdf:resource="http://localhost:8080/"/>
    <dc:creator>Nowak, Ulrich</dc:creator>
    <dspace:hasBitstream rdf:resource="https://kops.uni-konstanz.de/bitstream/123456789/18777/1/Vahaplar_All-optical%20magnetization%20.pdf"/>
    <dc:creator>Rasing, Theo</dc:creator>
    <dc:creator>Kirilyuk, Andrei</dc:creator>
    <dc:creator>Gerlach, Stefan</dc:creator>
    <dc:creator>Kalashnikova, Alexandra</dc:creator>
    <dc:creator>Tsukamoto, Arata</dc:creator>
    <dc:creator>Kimel, Alexey</dc:creator>
    <dc:contributor>Kimel, Alexey</dc:contributor>
    <dc:contributor>Tsukamoto, Arata</dc:contributor>
    <bibo:uri rdf:resource="http://kops.uni-konstanz.de/handle/123456789/18777"/>
    <dc:contributor>Nowak, Ulrich</dc:contributor>
    <dc:date rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2012-03-29T08:34:07Z</dc:date>
    <dcterms:available rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2012-03-29T08:34:07Z</dcterms:available>
    <dcterms:issued>2012</dcterms:issued>
    <dc:language>eng</dc:language>
    <void:sparqlEndpoint rdf:resource="http://localhost/fuseki/dspace/sparql"/>
    <dcterms:rights rdf:resource="https://rightsstatements.org/page/InC/1.0/"/>
    <dc:creator>Chantrell, Roy</dc:creator>
    <dcterms:isPartOf rdf:resource="https://kops.uni-konstanz.de/server/rdf/resource/123456789/41"/>
    <dc:creator>Vahaplar, Kadir</dc:creator>
    <dc:contributor>Hinzke, Denise</dc:contributor>
    <dc:creator>Hinzke, Denise</dc:creator>
    <dcterms:abstract xml:lang="eng">We present results of detailed experimental and theoretical studies of all-optical magnetization reversal by single circularly-polarized laser pulses in ferrimagnetic rare earth—transition metal (RE–TM) alloys GdxFe90−xCo10 (20%&lt;x&lt;28%). Using single-shot time-resolved magneto-optical microscopy and multiscale simulations, we identified and described the unconventional path followed by the magnetization during the reversal process. This reversal does not involve precessional motion of magnetization but is governed by the longitudinal relaxation and thus has a linear character. We demonstrate that this all-optically driven linear reversal can be modeled as a result of a two-fold impact of the laser pulse on the medium. First, due to absorption of the light and ultrafast laser-induced heating, the medium is brought to a highly nonequilibrium state. Simultaneously, due to the ultrafast inverse Faraday effect the circularly polarized laser pulse acts as an effective magnetic field of the amplitude up to ∼20 T. We show that the polarization-dependent reversal triggered by the circularly polarized light is feasible only in a narrow range (below 10%) of laser fluences. The duration of the laser pulse required for the reversal can be varied from ∼40 fs up to at least ∼1700 fs. We also investigate experimentally the role of the ferrimagnetic properties of GdFeCo in the all-optical reversal. In particular, the optimal conditions for the all-optical reversal are achieved just below the ferrimagnetic compensation temperature, where the magnetic information can be all-optically written by a laser pulse of minimal fluence and read out within just 30 ps. We argue that this is the fastest write-read event demonstrated for magnetic recording so far.</dcterms:abstract>
    <dc:contributor>Rasing, Theo</dc:contributor>
    <dc:contributor>Chantrell, Roy</dc:contributor>
    <dspace:isPartOfCollection rdf:resource="https://kops.uni-konstanz.de/server/rdf/resource/123456789/41"/>
    <dc:rights>terms-of-use</dc:rights>
    <dc:contributor>Itoh, A.</dc:contributor>
    <dc:contributor>Kalashnikova, Alexandra</dc:contributor>
    <dc:contributor>Kirilyuk, Andrei</dc:contributor>
    <dcterms:hasPart rdf:resource="https://kops.uni-konstanz.de/bitstream/123456789/18777/1/Vahaplar_All-optical%20magnetization%20.pdf"/>
    <dcterms:bibliographicCitation>First publ. in: Physical Review B ; 85 (2012), 10. - 104402</dcterms:bibliographicCitation>
    <dcterms:title>All-optical magnetization reversal by circularly-polarized laser pulses : Experiment and multiscale modeling</dcterms:title>
    <dc:contributor>Vahaplar, Kadir</dc:contributor>
  </rdf:Description>
</rdf:RDF>

Interner Vermerk

xmlui.Submission.submit.DescribeStep.inputForms.label.kops_note_fromSubmitter

Kontakt
URL der Originalveröffentl.

Prüfdatum der URL

Prüfungsdatum der Dissertation

Finanzierungsart

Kommentar zur Publikation

Allianzlizenz
Corresponding Authors der Uni Konstanz vorhanden
Internationale Co-Autor:innen
Universitätsbibliographie
Ja
Begutachtet
Diese Publikation teilen