Probing the superconducting ground state of ZrIrSi: A $\mu$SR study

Abstract

The superconducting ground state of newly reported ZrIrSi is probed by means of $\mu$SR technique along with resistivity measurement. The occurrence of superconductivity at $T_{\mathrm{C}}$ = 1.7 K is confirmed by resistivity measurement. ZF-$\mu$SR study revealed that below $T_{\mathrm{C}}$, there is no spontaneous magnetic field in the superconducting state, indicates TRS is preserved in case of ZrIrSi. From TF-$\mu$SR measurement, we have estimated the superfluid density as a function of temperature, which is described by an isotropic $s-$wave model with a superconducting gap $2\Delta (0)/k_{\mathrm{B}}{T}_{\mathrm{C}}$ = 5.1, indicates the presence of strong spin-orbit coupling. {\it Ab-initio} electronic structure calculation indicates that there are four bands passing through the Fermi level, forming four Fermi surface pockets. We find that the low-energy bands are dominated by the $4d$-orbitals of transition metal Zr, with substantially lesser weight from the $5d$-orbitals of the Ir-atoms.

6 pages, 4 figures

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Cited by in corpus (10)

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• Electron-phonon superconductivity in C-doped topological nodal-line semimetal Zr${}_5$Pt${}_3$: A muon spin rotation and relaxation ($\mu$SR) study
• Time reversal symmetry breaking and s-wave superconductivity in CaPd2Ge2: A $\mu$SR study
• Exploring Superconductivity in Ba${}_3$Ir${}_4$Ge${}_{16}$: Experimental and Theoretical Insights
• Probing the superconducting gap structure of ScRuSi via $\mu$SR and first-principles calculations
• Nodeless time-reversal symmetry breaking in the centrosymmetric superconductor Sc${}_5$Co${}_4$Si${}_{10}$ probed by muon-spin spectroscopy
• Superconductivity in the layered cage compound Ba3Rh4Ge16
• Multigap Superconductivity in the Filled-Skutterudite Compound LaRu${}_4$As${}_{12}$ probed by muon spin rotation
• Superconducting Gap Structure of Filled Skutterudite LaOs${}_4$As${}_{12}$ Compound through $\mu$SR Investigations