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 Tools annual

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 monthly

Global: Zendy Plus monthly

Presents the access of premium content as premium feature

Premium Content

Global: Zendy Plus annual

Global: Zendy Free Plan

Application of a tunnel-diode resonator (TDR) technique for studies of thevortex response in magnetic superconductors is described. Operating at verysmall excitation fields and sufficiently high frequency, TDR was used to probesmall-amplitude linear AC response in several types of single crystals wherelong-range magnetic order coexists with bulk superconductivity. Full local -moment ferromagnetism destroys superconductivity and can coexist with it onlyin a narrow temperature range ($\sim 0.3$ K). In contrast, weak ferromagneticas well as antiferromagnetic orders can coexist with bulk superconductivity andmay even lead to enhancements of vortex pinning. By analyzing the Campbellpenetration depth we find sharp increase of the true critical current in thevicinity of the magnetic phase transitions. We conclude that critical magneticfluctuations are responsible for this enhancement.

Coexistence of Long-Range Magnetic Order and Superconductivity from Campbell Penetration Depth Measurements