Magnetotransport studies of FeSe under hydrostatic pressure

TL;DR

This study investigates how hydrostatic pressure affects the superconducting properties of FeSe, revealing increased transition temperature and upper critical field, advancing understanding of iron-based superconductors.

Contribution

It provides new magnetotransport data on FeSe under pressure, showing significant enhancements in superconducting parameters.

Findings

Superconducting transition temperature nearly doubled at 1.98 GPa

Upper critical field increased from 26.7T to 47.5T

Pressure enhances superconducting properties in FeSe

Abstract

The discoveries of iron-based superconductors with relatively high transition temperature are under intense experimental and theoretical investigation. Here we present magnetotransport measurements on FeSe superconductor under hydrostatic pressure. We show that in Fe-deficient tetragonal FeSe binary compound, the onset of superconducting transition is almost doubled under 1.98GPa pressure and the estimated upper critical field of 26.7Tesla is increased to 47.5Tesla.