High J_c and low anisotropy of hydrogen doped NdFeAsO superconducting thin film.

ABSTRACT: The recent realisations of hydrogen doped LnFeAsO (Ln = Nd and Sm) superconducting epitaxial thin films call for further investigation of their structural and electrical transport properties. Here, we report on the microstructure of a NdFeAs(O,H) epitaxial thin film and its temperature, field, and orientation dependencies of the resistivity and the critical current density J_c. The superconducting transition temperature T_c is comparable to NdFeAs(O,F). Transmission electron microscopy investigation supported that hydrogen is homogenously substituted for oxygen. A high self-field J_c of over 10 MA/cm² was recorded at 5 K, which is likely to be caused by a short London penetration depth. The anisotropic Ginzburg-Landau scaling for the angle dependenc

SUBMITTER: Iida K 

PROVIDER: S-EPMC7952916 | biostudies-literature | 2021 Mar

REPOSITORIES: biostudies-literature