Evaluation protocol for revealing magnonic contrast in TR-STXM measurements

Zingsem, Benjamin; Feggeler, Thomas; Meckenstock, Ralf; Spoddig, Detlef; Schaffers, Taddäus; Pile, Santa; Ohldag, Hendrik; Farle, Michael; Wende, Heiko; Ney, Andreas; Ollefs, Katharina

doi:10.1063/5.0145753

Article / ChapterCC BY 4.0Sun Apr 23 2023

Evaluation protocol for revealing magnonic contrast in TR-STXM measurements

Zingsem, Benjamin ; Feggeler, Thomas ; Meckenstock, Ralf ; Spoddig, Detlef ; Schaffers, Taddäus ; Pile, Santa ; Ohldag, Hendrik; Farle, Michael ; Wende, Heiko ; Ney, Andreas ; Ollefs, Katharina

We present a statistically motivated method to extract magnonic contrast from time-resolved scanning transmission x-ray microscopy (TR-STXM) measurements. TR-STXM is an element-specific method for resolving spin-dynamics in space and time. It offers nanometer spatial resolution and picosecond temporal resolution. The presented method makes it possible to obtain phase and amplitude profiles of spin-
waves from STXM measurements. Furthermore, it allows for a rigorous transformation to reciprocal magnon⃗ k-space, revealing⃗ k-dependent magnon properties such as the magnon dispersion in three dimensions and for all directions of the magnetic anisotropy. We demonstrate our method using X-band ferromagnetic resonance on a micrometer-sized permalloy assembly.

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Date Issued:

23.04.2023

URN:

urn:nbn:de:hbz:465-20240614-161133-0

DOI:

10.1063/5.0145753

Language:

English

Type of Resource:

Text

Subject categories of the Deutsche Nationalbibliografie:

530 Physics

Hosting institution:

Faculty of Physics

Hosting institution:

Scientific institutes, Center for Nanointegration Duisburg-Essen (CENIDE)

funding:

The publication of this article was supported by the Publication Fund of the University of Duisburg-Essen.

This work was funded by the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) under Project Nos. OL513/1-1 and 321560838 and, in part, by the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) under Project No. 405553726 TRR 270. T.F. and H.O. acknowledge funding through Lawrence Berkeley National Laboratory LDRD Award: Development of a Continuous Photon Counting Scheme for Time Resolved Studies. T.F. acknowledges support from STROBE: A National Science Foundation Science & Technology Center, under Grant No. DMR-1548924. S.P and A.N. want to acknowledge funding by the Austrian Science Fund (FWF) under Project No. I-3050. B.Z. acknowledges helpful discussions with Michael Winklhofer. The authors acknowledge the use of the Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory, which is supported by the U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences under Contract No. DE-AC02-76SF00515.

Info on primary publication:

Benjamin Zingsem, Thomas Feggeler, Ralf Meckenstock, Detlef Spoddig, Taddäus Schaffers, Santa Pile, Hendrik Ohldag, Michael Farle, Heiko Wende, Andreas Ney, Katharina Ollefs; Evaluation protocol for revealing magnonic contrast in TR-STXM measurements. AIP Advances 1 April 2023; 13 (4): 045020. https://doi.org/10.1063/5.0145753

Published Online: 24 April 2023

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