Ultrafast Spin Dynamics in Heusler Alloys

ORAL

Abstract

We present new ultrafast spin and electron dynamics for Heusler alloys uncovered using an extreme ultraviolet (EUV) probe. Heusler alloys represent a diverse group of materials whose constituent elements can be chosen to tune electronic and magnetic properties. By addressing M-edge resonances with an extreme UV probe we can perform element specific magneto-optical Kerr effect (MOKE) measurements on the natural timescales of the shortest processes in Heusler alloys. The ultrafast responses of these materials exhibit unique signatures, such as ultrafast spin transfer, that depends on the band structure of their magnetic sublattices.

*This material is based on work supported by the U.S. Department of Energy Office of Basic Energy Sciences X-Ray Scattering Program Award No. DE-SC0002002.

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Presenters

  • Sinead A Ryan

    • JILA

Authors

  • Sinead A Ryan

    • JILA

  • Peter C Johnsen

    • JILA

  • Henrike Probst

    • University of Goettingen

  • Mohamed F Elhanoty

    • Uppsala University

  • Peter Elliott

    • Max Planck Inst Microstructure

  • Anya Grafov

    • JILA, University of Colorado Boulder

  • Daniel Steil

    • University of Goettingen

  • Anna Delin

    • KTH Royal Institute of Technology, Sweden
    • KTH Royal Institute of Technology
    • KTH royal institute of technology

  • Oscar Grånäs

    • Uppsala University

  • Olle Eriksson

    • Uppsala University
    • Uppsala University, Sweden, Örebro University, Sweden

  • Sangeeta Sharma

    • Max Born Institute
    • Max Born Institute, Berlin

  • Stefan Mathias

    • University of Goettingen

  • Henry C Kapteyn

    • University of Colorado, Boulder
    • University of Colorado
    • JILA, University of Colorado, Boulder

  • Margaret M Murnane

    • JILA
    • JILA, University of Colorado, Boulder