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 Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

Nano resonators in which mechanical vibrations and spin waves can be coupledare an intriguing concept that can be used in quantum information processing totransfer information between different states of excitation. Until now, thefabrication of free standing magnetic nanostructures which host long lived spinwave excitatons and may be suitable as mechanical resonators seemed elusive. Wedemonstrate the fabrication of free standing monocrystalline yttrium irongarnet (YIG) 3D nanoresonators with nearly ideal magnetic properties. Thefreestanding 3D structures are obtained using a complex lithography processincluding room temperature deposition and lift-off of amorphous YIG andsubsequent crystallization by annealing. The crystallization nucleates from thesubstrate and propagates across the structure even around bends over distancesof several micrometers to form e.g. monocrystalline resonators as shown bytransmission electron microscopy. Spin wave excitations in individualnanostructures are imaged by time resolved scanning Kerr microscopy. The narrowlinewidth of the magnetic excitations indicates a Gilbert damping constant ofonly $\alpha = 2.6 \times 10^{-4}$ rivalling the best values obtained forepitaxial YIG thin film material. The new fabrication process represents a leapforward in magnonics and magnon mechanics as it provides 3D YIG structures ofunprecedented quality. At the same time it demonstrates a completely new routetowards the fabrication of free standing crystalline nano structures which maybe applicable also to other material systems.

Monocrystalline free standing 3D yttrium iron garnet magnon nano resonators