All-Optical Control of Bubble and Skyrmion Breathing

Autor(en)

Tim Titze, Sabri Koraltan, Timo Schmidt, Dieter Suess, Manfred Albrecht, Stefan Mathias, Daniel Steil

Abstrakt

Controlling the dynamics of topologically protected spin objects by all-optical means promises enormous potential for future spintronic applications. Excitation of bubbles and skyrmions in ferrimagnetic [Fe(0.35 nm)/Gd(0.40 nm)]160 multilayers by ultrashort laser pulses leads to a periodic modulation of the core diameter of these spin objects, the so-called breathing mode. We demonstrate versatile amplitude and phase control of this breathing using a double excitation scheme, where the observed dynamics is controlled by the excitation delay. We gain insight into both the timescale on which the breathing mode is launched and the role of the spin object size on the dynamics. Our results demonstrate that ultrafast optical excitation allows for precise tuning of the spin dynamics of trivial and nontrivial spin objects, showing a possible control strategy in device applications.

Organisation(en)

Physik Funktioneller Materialien, Forschungsplattform MMM Mathematics-Magnetism-Materials

Externe Organisation(en)

Georg-August-Universität Göttingen, Universität Augsburg

Journal

Physical Review Letters

Band

133

Anzahl der Seiten

6

ISSN

0031-9007

DOI

https://doi.org/10.48550/arXiv.2405.01966

Publikationsdatum

10-2024

Peer-reviewed

Ja

ÖFOS 2012

103018 Materialphysik

ASJC Scopus Sachgebiete

Allgemeine Physik und Astronomie

Link zum Portal

https://ucrisportal.univie.ac.at/de/publications/5adca88d-3ef3-4ca9-871b-66db5a1b550a