Probing the superconducting ground state of ZrIrSi: A SR study
arXiv:1903.08581 · doi:10.1103/PhysRevB.99.174513
Abstract
The superconducting ground state of newly reported ZrIrSi is probed by means of SR technique along with resistivity measurement. The occurrence of superconductivity at = 1.7 K is confirmed by resistivity measurement. ZF-SR study revealed that below , there is no spontaneous magnetic field in the superconducting state, indicates TRS is preserved in case of ZrIrSi. From TF-SR measurement, we have estimated the superfluid density as a function of temperature, which is described by an isotropic wave model with a superconducting gap = 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 -orbitals of transition metal Zr, with substantially lesser weight from the -orbitals of the Ir-atoms.
6 pages, 4 figures
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