Please use this identifier to cite or link to this item:
http://doi.org/10.25358/openscience-9093
Authors: | Gruber, Raphael Brems, Maarten A. Rothörl, Jan Sparmann, Tobias Schmitt, Maurice Kononenko, Iryna Kammerbauer, Fabian Syskaki, Maria-Andromachi Farago, Oded Virnau, Peter Kläui, Mathias |
Title: | 300-times-increased diffusive skyrmion dynamics and effective pinning reduction by periodic field excitation |
Online publication date: | 16-May-2023 |
Year of first publication: | 2023 |
Language: | english |
Abstract: | Thermally induced skyrmion dynamics, as well as skyrmion pinning effects, in thin films have attracted significant interest. While pinning poses challenges in deterministic skyrmion devices and slows down skyrmion diffusion, for applications in non-conventional computing, both pinning of an appropriate strength and skyrmion diffusion speed are key. Here, periodic field excitations are employed to realize an increase of the skyrmion diffusion by more than two orders of magnitude. Amplifying the excitation, a drastic reduction of the effec tive skyrmion pinning, is reported, and a transition from pinning-dominated dif fusive hopping to dynamics approaching free diffusion is observed. By tailoring the field oscillation frequency and amplitude, a continuous tuning of the effec tive pinning and skyrmion dynamics is demonstrated, which is a key asset and enabler for non-conventional computing applications. It is found that the peri odic excitations additionally allow stabilization of skyrmions at different sizes for field values that are inaccessible in static systems, opening up new approaches to ultrafast skyrmion motion by transiently exciting moving skyrmions. |
DDC: | 530 Physik 530 Physics |
Institution: | Johannes Gutenberg-Universität Mainz |
Department: | FB 08 Physik, Mathematik u. Informatik |
Place: | Mainz |
ROR: | https://ror.org/023b0x485 |
DOI: | http://doi.org/10.25358/openscience-9093 |
Version: | Published version |
Publication type: | Zeitschriftenaufsatz |
License: | CC BY-NC |
Information on rights of use: | https://creativecommons.org/licenses/by-nc/4.0/ |
Journal: | Advanced materials 35 17 |
Pages or article number: | 2208922 |
Publisher: | Wiley-VCH |
Publisher place: | Weinheim |
Issue date: | 2023 |
ISSN: | 0935-9648 |
Publisher DOI: | 10.1002/adma.202208922 |
Appears in collections: | DFG-491381577-H |
Files in This Item:
File | Description | Size | Format | ||
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![]() | 300timesincreased_diffusive_s-20230510102204722.pdf | Published version | 1.46 MB | Adobe PDF | View/Open |