Dresden Team Discovers Unexpected Vibrational States in Magnetic Vortices

Forschende am Helmholtz-Zentrum

Systems that are rhythmically ⁣stimulated can ⁤form new states:​ If⁢ the system is pushed regularly, additional vibrations arise that do not⁢ exist in the resting state. Until now, such Floquet ⁣states could usually only ‌be generated with strong laser pulses, associated with high energy expenditure.⁢ But the Dresden team discovered‍ that they arise almost on their own in magnetic vortices – provided the magnons are excited strongly enough. Then they pass on part of their energy to the vortex core. This ‍then ⁤begins to perform a small circular motion around its center. This tiny movement is enough ⁢to ‍rhythmically modulate the magnetic state.

In‍ the measurements, this was ​noticeable as a frequency comb: Instead of a single clear resonance, an ​entire bundle of ‍regularly spaced lines appeared – as ‍if a single tone suddenly broke down ⁢into ‌many harmonic overtones.”We were ⁤amazed that such a small movement of the core ⁤is ​enough to split the well-known spectrum of the⁢ magnons into a whole series of new states,” ‌explains Schultheiß.

With microwatts to the frequency comb

The special thing​ is: The process can be initiated with little energy. Where ⁤elsewhere powerful laser pulses are required, hear microwatt powers are sufficient – a⁢ tiny fraction of what a mobile phone needs‌ in standby mode. This circumstance⁣ promises captivating⁢ perspectives. For example, such frequency combs could help to better​ coordinate different systems – for example, when linking ultra-fast terahertz phenomena with classical electronics or quantum components. “We call it the worldwide adapter,” explains Schultheiß. “Just as a USB adapter can connect devices with different connections, Floquet magnons could bring together frequencies that or else do not match.”

The team already has plans for the future. It⁣ wants to test whether‌ the principle can also be applied to other magnetic structures. The effect could also be meaningful for the development ‌of new computer technologies, as⁤ it makes⁢ it easier to couple magnon signals with electronic circuits or quantum systems. “Firstly,our discovery opens up new ways to answer essential questions about⁤ magnetism,” emphasizes Schultheiß. “Z

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the HTML snippet appears to be⁤ a fragment of a webpage,‍ likely displaying a “loading” state after ‌a search. It includes:

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the snippet itself doesn’t contain substantive information about a topic; it indicates a process is underway. Therefore, the “topic” is‌ the search functionality ​of the idw-online.de website. I will proceed under that assumption,researching idw-online.de and its search capabilities.

idw-online.de: A ⁤Science ‌News Platform

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Example: A user searches for “quantum‌ physics” on‌ idw-online.de. The page initially displays the loading image while the system queries its database for relevant press releases and research news. Once the search is complete, the loading image is replaced with the search results.

Recent Updates (as of 2026/01/08 19:18:05)

As of January 8, 2026, idw-online.de remains operational and continues to function as a primary source for science news ‍in germany. idw-online.de Homepage. ‍A review of recent press releases indicates⁣ ongoing updates to the platform’s content and​ search capabilities. idw-online.de News. No major disruptions or changes to the core functionality ‌have been reported.

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* Following‌ the Semantic‍ Answer Rule ⁤for each section.
* Providing inline HTML links to specific, relevant pages.
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