Superconducting properties of FeSe0.5Te0.5 under high pressure

TL;DR

This study investigates how applying high pressure affects the superconducting properties of FeSe0.5Te0.5, revealing increases in critical temperature and changes in magnetic properties, with calculations based on Ginzburg-Landau theory.

Contribution

It provides new insights into pressure-induced modifications of superconductivity in FeSe0.5Te0.5, including detailed measurements and theoretical analysis.

Findings

Critical temperature increased from 14.45 K to 20.5 K under pressure.

Observed anomalous variations in Meissner fraction and Ginzburg-Landau parameters.

Superconducting properties were analyzed using Werthamer-Helfand-Hohenber approximation.

Abstract

This work reports studies performed in the superconducting compound FeSe0:5Te0:5 under high pressure. Changes were observed in the transition temperature, superconducting critical fields,anomalous variations in the Meissner fraction, and in Ginzburg Landau parameters. The superconducting properties were calculated and compared using the Werthamer-Helfand-Hohenber approximation and Ginzburg-Landau theory. Hydrostatic pressure was produced from atmospheric to 823 MPa, the increment in the critical temperature was from 14.45 to 20.5 K at a rate of change about 0.0069 K/MPa.