Electrochemical synthesis of iron-based superconductor FeSe films

TL;DR

This paper demonstrates a novel electrochemical method to synthesize FeSe superconducting films with controllable composition, achieving superconductivity at 3.5 K, offering advantages for practical applications.

Contribution

It introduces an electrochemical synthesis technique for FeSe films, enabling precise control over composition and superconducting properties, which is a new approach in the field.

Findings

FeSe films exhibit superconductivity at 3.5 K

Superconducting properties depend on electric potential and pH

Electrochemical synthesis offers practical advantages

Abstract

The superconducting FeSe films were successfully fabricated using the electrochemical synthesis. The composition ratio of Fe and Se can be controlled by the electric potential and pH value. We found that the FeSe films deposited at the electric potential -1.75 V and pH 2.3 show the superconducting transition at 3.5 K. The establishment of this electrochemical synthesis technique will provide many advantages for application.