Superconductivity in the ternary compound SrPt$_{10}$P$_4$ with complex new structure

TL;DR

This paper reports the discovery of superconductivity at 1.4K in the newly characterized ternary compound SrPt$_{10}$P$_4$, which has a complex monoclinic structure, and explores its properties under pressure.

Contribution

It introduces a new complex-structured superconductor SrPt$_{10}$P$_4$ and provides detailed structural and superconducting property analysis, including pressure dependence.

Findings

Superconductivity at 1.4K confirmed by multiple measurements.

Superconducting T$_C$ decreases under pressure with a rate of -0.016 K/GPa.

SrPt$_{10}$P$_4$ has a unique monoclinic structure.

Abstract

We report superconductivity at 1.4K in the ternary SrPt$_{10}$P$_4$ with a complex new structure. SrPt$_{10}$P$_4$ crystallizes in a monoclinic space-group C2/c (\#15) with lattice parameters a= 22.9151(9)$\AA$, b= 13.1664(5)$\AA$, c=13.4131(5)$\AA$, and $\beta$= 90.0270(5)${^\circ}$. Bulk superconductivity in the samples has been demonstrated through resistivity, ac susceptibility, and heat capacity measurements. High pressure measurements have shown that the superconducting T$_C$ is systematically suppressed upon application of pressure, with a dT$_C$/dP coefficient of -0.016 K/GPa.