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

This work demonstrates strong coupling regime between an Erbium ion spinensemble and microwave Hybrid Cavity-Whispering Gallery Modes in a YttriumAluminium Garnet dielectric crystal. Coupling strengths of $220$~MHz and modequality factors in excess of $10^6$ are demonstrated. Moreover, the magneticresponse of high-Q modes demonstrates behaviour which is unusual forparamagnetic systems. This behaviour includes hysteresis and memory effects.Such qualitative change of the system's magnetic field response is interpretedas a phase transition of Rare Earth ion impurities. This phenomenon is similarto the phenomenon of dilute ferromagnetism in semiconductors. The cleartemperature dependence of the phenomenon is demonstrated.

Evidence of Dilute Ferromagnetism in Rare-Earth doped YAG