Veranstaltungen

02. Dezember 2025, 16:00 bis 17:00

Sebastian Wintz, Institute for Nanospectroscopy, Helmholtz-Zentrum Berlin, Germany

Seminar

Spin textures and spin waves as seen by x-ray imaging

The investigation of spin-wave phenomena—magnonics—plays an increasingly central role in modern condensed-matter research [1]. Spin waves are considered promising signal carriers for next-generation spintronic information-processing devices, with the potential to surpass charge-based technologies in both energy efficiency and device miniaturization. A key challenge on this path is the generation, control, and detection of spin waves with nanoscale wavelengths.

In this talk, I will show how time-resolved x-ray microscopy enables direct imaging of nanoscale spin dynamics. Using this technique, it has been demonstrated that ferromagnetic spin textures—particularly vortex cores and domain walls—can act as nanoscale spin-wave emitters and waveguides [2–5]. I will further discuss recent advances in x-ray imaging of spin-wave dynamics in ferrimagnetic and antiferromagnetic materials, as well as emerging approaches for probing three-dimensional magnetic systems [6].

[1] A. V. Chumak et al., IEEE Trans. Magn. 56, 0800172 (2022).
[2] S. Wintz et al., Nat. Nanotech. 11, 948 (2016).
[3] V. Sluka et al., Nat. Nanotech. 14, 328 (2019).
[4] R. A. Gallardo et al. ACS nano 18, 5249 (2024).
[5] S. Mayr et al. Appl. Phys. Rev. 11, 041411 (2024).
[6] S. Koraltan et al. Adv. Funct. Mater. e15338 (2025).

Kalendereintrag

Veranstaltung Details

Veranstaltungsort
SEM.R. DB gelb 05 B
1040 Wien
Wiedner Hauptstraße 8-10/E134
Veranstalter
IAP
Manuela Marik
marik@iap.tuwien.ac.at
Öffentlich
Ja
Kostenpflichtig
Nein
Anmeldung erforderlich
Nein