Microscopic origin of highly enhanced current carrying capabilities of thin NdFeAs(O,F) films.

ABSTRACT: Fe-based superconductors present a large variety of compounds whose physical properties strongly depend on the crystal structure and chemical composition. Among them, the so-called 1111 compounds show the highest critical temperature T _c in the bulk form. Here we demonstrate the realization of excellent superconducting properties in NdFeAs(O_1-x F _x ). We systematically investigated the correlation between the microstructure at the nanoscale and superconductivity in an epitaxial 22 nm NdFeAs(O_1-x F _x ) thin film on a MgO single crystalline substrate (T _c = 44.7 K). Atomic resolution analysis of the microstructure by transmission electron microscopy and atom probe tomography identified

SUBMITTER: Kauffmann-Weiss S 

PROVIDER: S-EPMC9417295 | biostudies-literature | 2019 Aug

REPOSITORIES: biostudies-literature