Electronic and Superconducting Properties of Some FeSe-based Single Crystals and Films Grown Hydrothermally

TL;DR

This paper reviews recent experimental studies on FeSe-based superconductors, focusing on their electronic properties, synthesis methods, and the enhancement of critical current density in Mn-doped films for practical applications.

Contribution

It introduces a hydrothermal synthesis method for FeSe-based superconductors and reports on the improved critical current density in Mn-doped films, advancing practical superconductor development.

Findings

Successful hydrothermal synthesis of FeSe-based single crystals and films.

Enhanced critical current density in Mn-doped (Li,Fe)OHFeSe films.

Link between superconductivity and normal-state electronic properties.

Abstract

Our recent year's studies of the prototypal FeSe and molecule-intercalated (Li,Fe)OHFeSe superconductor systems are briefly reviewed here, with emphasis on experimental observations of the link between the superconductivity and normal-state electronic property in the single crystals and films. These samples were successfully synthesized by our recently developed soft-chemical hydrothermal methods, which are also briefly described. Particularly in the Mn-doped high-Tc (Li,Fe)OHFeSe film, a strong enhancement of the superconducting critical current density was achieved, which is promising for practical application of the superconductivity.