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A setup for element specific magnetization dynamics using the transverse magneto-optic Kerr effect in the energy range of 30-72 eV
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Molecular and Condensed Matter Physics.
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Molecular and Condensed Matter Physics.
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Molecular and Condensed Matter Physics.
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Molecular and Condensed Matter Physics. MAX VI Lab, Lund, Sweden..
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2017 (English)In: Review of Scientific Instruments, ISSN 0034-6748, E-ISSN 1089-7623, Vol. 88, no 3, 033113Article in journal (Refereed) Published
Abstract [en]

In this paper, we present a spectrometer that is designed for element-specific and time-resolved transverse magneto-optic Kerr effect experiments at the high-harmonic generation pump-probe facility High Energy Laser Induced Overtone Source (HELIOS) laboratory. HELIOS delivers photons with energies between 30 eV and 72 eV with an overall time resolution of less than 40 fs. The spectrometer is based on a Rowland-circle geometry and allows for simultaneous measurements of all magnetic transition-metal elements. The setup also features easy sample transfer and alignment, and it combines high photon throughput, optimized data acquisition, and a fast switching of the magnetic field at the sample. The spectrometer performance is demonstrated by measuring the ultrafast demagnetization of permalloy. Our data are, for all practical purposes, identical to what have been reported in the earlier high-order harmonic generation work of a similar sample by Mathias et al. [Proc. Natl. Acad. Sci. U.S.A. 109, 4792-4797 (2012)], however, obtained within 15% of the acquisition time compared to their study. Furthermore, our data show a shift of the demagnetization curve of Ni relative to Fe, which has previously been interpreted as a delay of the Ni demagnetization to that of Fe [S. Mathias et al., Proc. Natl. Acad. Sci. U. S. A. 109, 4792-4797 (2012)].

Place, publisher, year, edition, pages
AMER INST PHYSICS , 2017. Vol. 88, no 3, 033113
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Accelerator Physics and Instrumentation Condensed Matter Physics
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URN: urn:nbn:se:uu:diva-320922DOI: 10.1063/1.4978907ISI: 000397871400014PubMedID: 28372391OAI: oai:DiVA.org:uu-320922DiVA: diva2:1103293
Available from: 2017-05-30 Created: 2017-05-30 Last updated: 2017-05-30Bibliographically approved

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Jana, SomnathTerschlüsen, Joachim A.Stefanuik, RobertPlogmaker, StefanMalik, Rameez S.Knut, RonnySöderström, JohanKaris, Olof

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Jana, SomnathTerschlüsen, Joachim A.Stefanuik, RobertPlogmaker, StefanMalik, Rameez S.Knut, RonnySöderström, JohanKaris, Olof
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Molecular and Condensed Matter Physics
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Review of Scientific Instruments
Accelerator Physics and InstrumentationCondensed Matter Physics

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