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

Ferromagnetic channels subject to spin injection at one extremum sustainlong-range coherent textures that carry spin currents known as dissipativeexchange flows (DEFs). In the weak injection regime, spin currents carried byDEFs decay algebraically and extend through the length of the channel, a regimeknown as spin superfluidity. Similar to fluids, these structures are prone tophase-slips that manifest as vortex-antivortex pairs. Here, we numericallystudy vortex shedding from DEFs excited in a magnetic nanowire with a physicalobstacle. Using micromagnetic simulations, we find regimes of laminar flow andvortex shedding as a function of obstacle position tunable by the and spininjection sign and magnitude. Vortex-antivortex pairs translate forward (VFregime) or backward (VB regime) with respect to the detector's extremum,resulting in well-defined spectral features. Qualitatively similar results areobtained when temperature, anisotropy, and weak non-local dipole fields areincluded in the simulations. These results provide clear features associatedwith DEFs that may be detected experimentally in devices with nominallyidentical boundary conditions. Furthermore, our results suggest that obstaclescan be considered as DEF control gates, opening an avenue to manipulate DEFsvia physical defects.

Controllable vortex shedding from dissipative exchange flows in ferromagnetic channels