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

We investigated the effects of phosphorus substitution on the shape of theTc(x) dome in 1111-type SmFeAs1-yPyO1-xHx (0 < x < 0.5). Hydride ionsubstitution of oxide sites (O2- -> H-) exerts a chemical pressure effect,i.e., a structural reduction of the Pn-Fe-Pn angle {\alpha} (Pn = P, As) andalso dopes electrons into the FePn layer to induce superconductivity. Isovalentphosphorus substitution (P3- -> As3-) can induce only a chemical pressureeffect, i.e., an increase of {\alpha} for La-substitution of Sm-sites. As yincreases from 0.0 to 0.5, the single Tc dome gradually splits into two domes,similar to those of LaFeAsO1-xHx with a Tc valley at x ~ 0.16. We found thatthe Tc valley is located around (x, {\alpha}) ~ (0.16, 113{\deg}) for bothSmFeAs1-yPyO1-xHx and LaFeAsO1-xHx series, irrespective of changes in the Pnanion and Ln cation species. This result suggests that suppression of Tc leadsto the emergence of a Tc valley when both the shape of FePn4 tetrahedrarepresented by {\alpha} and electron doping level of x meet the above criterionin 1111 type iron oxypnictide superconductors.

Controlling Factors of Tc-Dome Structure in 1111-Type Iron Arsenide Superconductors