English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

Despite theoretical predictions for a Cherenkov-type radiation of spin waves(magnons) by various propagating magnetic perturbations, fast-enough movingmagnetic field stimuli have not been available so far. Here, we experimentallyrealize the Cherenkov radiation of spin waves in a Co-Fe magnonic conduit byfast-moving (>1 km/s) magnetic flux quanta (Abrikosov vortices) in an adjacentNb-C superconducting strip. The radiation is evidenced by the microwavedetection of spin waves propagating a distance of 2 micrometers from thesuperconductor and it is accompanied by a magnon Shapiro step in itscurrent-voltage curve. The spin-wave excitation is unidirectional andmonochromatic, with sub-40 nm wavelengths determined by the period of thevortex lattice. The phase-locking of the vortex lattice with the excited spinwave limits the vortex velocity and reduces the dissipation in thesuperconductor.

Cherenkov radiation of spin waves by ultra-fast moving magnetic flux quanta