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

Although 2011 marks the 50th anniversary of Nb3Sn as the first high fieldsuperconductor, real understanding of its upper critical field behavior{\mu}0Hc2 is incomplete. Here we show surprising {\mu}0Hc2 data on highlyhomogeneous bulk samples examined both by small-current, transport and byvolumetric-averaging specific heat and the reversible magnetization techniques,which exhibit identical upper critical field {\mu}0Hc2(0.3 K) ~ 29{\pm} 0.2 Twith or without undergoing the cubic to tetragonal transition, a result instrong contrast to widely used multiple-source data compilations that show astrong depression of {\mu}0Hc2(0K) from 29 T to 21.4 T in the tetragonal state.

Evidence that the upper critical field of Nb3Sn is independent of whether it is cubic or tetragonal