A review of Fe-chalcogenide superconductors: the simplest Fe-based superconductor

TL;DR

This review summarizes the physical properties, pressure effects, and fabrication progress of Fe-chalcogenide superconductors, highlighting their status as the simplest Fe-based superconductors and discussing factors influencing their high transition temperatures.

Contribution

It provides a comprehensive overview of Fe-chalcogenide superconductors, emphasizing their simplicity, pressure effects, and recent advances in thin-film and wire fabrication.

Findings

Fe-chalcogenides are the simplest Fe-based superconductors

High pressure significantly affects their superconducting properties

Progress in thin-film and wire fabrication has been achieved

Abstract

Here we summarize the physical properties of the newly discovered Fe-chalcogenide superconductors. The Fe-chalcogenide superconductors attract us as the simplest Fe-based superconductors. Furthermore, Fe chalcogenides show a huge pressure effect on their superconducting properties. The origin of the high transition temperature was discussed with both the change in crystal structure and magnetism. The progress on the thin-film and superconducting-wire fabrications are also described.