Laser induced magnetization switching in films with perpendicular anisotropy : a comparison between measurements and a multi-macrospin model

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dc.contributor.authorBunce, Christopherdeu
dc.contributor.authorWu, Jingdeu
dc.contributor.authorJu, Ganpingdeu
dc.contributor.authorLu, Bindeu
dc.contributor.authorHinzke, Denise
dc.contributor.authorKazantseva, Nataliadeu
dc.contributor.authorNowak, Ulrich
dc.contributor.authorChantrell, Roy W.deu
dc.date.accessioned2011-03-24T17:53:08Zdeu
dc.date.available2011-03-24T17:53:08Zdeu
dc.date.issued2009deu
dc.description.abstractThermally-assisted ultra-fast magnetization reversal in a DC magnetic field for magnetic multilayer thin films with perpendicular anisotropy has been investigated in the time domain using femtosecond laser heating. The experiment is set-up as an optically pumped stroboscopic Time Resolved Magneto-Optical Kerr Effect magnetometer. It is observed that a modest laser fluence of about 0.3 mJ/cm2 induces switching of the magnetization in an applied field much less than the DC coercivity (0.8 T) on the sub-nanosecond time-scale. This switching was thermally-assisted by the energy from the femtosecond pump-pulse. The experimental results are compared with a model based on the Landau Lifschitz Bloch equation. The comparison supports a description of the reversal process as an ultra-fast demagnetization and partial recovery followed by slower thermally activated switching due to the spin system remaining at an elevated temperature after the heating pulse.eng
dc.description.versionpublished
dc.format.mimetypeapplication/pdfdeu
dc.identifier.arxiv0906.5457v1
dc.identifier.doi10.1103/PhysRevB.81.174428
dc.identifier.ppn323089445deu
dc.identifier.urihttp://kops.uni-konstanz.de/handle/123456789/9047
dc.language.isoengdeu
dc.legacy.dateIssued2010deu
dc.rightsterms-of-usedeu
dc.rights.urihttps://rightsstatements.org/page/InC/1.0/deu
dc.subject.ddc530deu
dc.titleLaser induced magnetization switching in films with perpendicular anisotropy : a comparison between measurements and a multi-macrospin modeleng
dc.typePREPRINTdeu
dspace.entity.typePublication
kops.citation.bibtex
@unpublished{Bunce2009Laser-9047,
  year={2009},
  doi={10.1103/PhysRevB.81.174428},
  title={Laser induced magnetization switching in films with perpendicular anisotropy : a comparison between measurements and a multi-macrospin model},
  author={Bunce, Christopher and Wu, Jing and Ju, Ganping and Lu, Bin and Hinzke, Denise and Kazantseva, Natalia and Nowak, Ulrich and Chantrell, Roy W.}
}
kops.citation.iso690BUNCE, Christopher, Jing WU, Ganping JU, Bin LU, Denise HINZKE, Natalia KAZANTSEVA, Ulrich NOWAK, Roy W. CHANTRELL, 2009. Laser induced magnetization switching in films with perpendicular anisotropy : a comparison between measurements and a multi-macrospin modeldeu
kops.citation.iso690BUNCE, Christopher, Jing WU, Ganping JU, Bin LU, Denise HINZKE, Natalia KAZANTSEVA, Ulrich NOWAK, Roy W. CHANTRELL, 2009. Laser induced magnetization switching in films with perpendicular anisotropy : a comparison between measurements and a multi-macrospin modeleng
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