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

In order to study the possible superconductivity at the polar surfaces of1111-type iron-based superconductors, which is doped with a large amount ofholes in spite of the electron doping in bulk materials, we have performedangle-resolved photoemission spectroscopy (ARPES) studies on superconductingPrFeAsO$_{1-y}$~crystals. We have indeed observed the opening of asuperconducting gap on surface-derived hole pockets as well as on abulk-derived hole pocket. The superconducting gap is found to open on thesurface-derived hole pockets below the bulk $T_c$, which suggests that thesurface superconductivity is possibly induced by proximity effect from thebulk. We have also observed the opening of a large pseudogap on thesurface-derived hole pockets, which is similar to the pseudogap in 122-typebulk superconductors doped with a smaller amount of holes. This suggests thatthe opening of a large pseudogap is a characteristic property of hole-dopediron-based superconductors.

physical review research

Superconducting gap and pseudogap in the surface states of the  iron-based superconductor PrFeAsO$_{1-y}$ studied by angle-resolved  photoemission spectroscopy