Microscopic investigation of the superconducting properties of the strongly coupled superconductor IrGe via <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mi>μ</mml:mi><mml:mi>SR</mml:mi></mml:math>

Exploring superconductors which can possess a pairing mechanism other than the BCS predicted $s$ wave have continually attracted considerable interest. Superconductors with low-lying phonons may exhibit unconventional superconductivity as coupling of electrons these potentially affect nature superconducting ground state, resulting in strongly coupled superconductivity. In this work, by using magnetization, AC transport, specific heat, and muon spin rotation/relaxation ($\ensuremath{\mu}\mathrm{SR}$) measurements, we report detailed investigation on state superconductor, IrGe, that has transition temperature, ${T}_{C}$, at 4.7 K. Specific heat (SH), transverse field $\ensuremath{\mu}\mathrm{SR}$ is best described an isotropic $s$-wave model strong electron-phonon coupling, indicated values both $\mathrm{\ensuremath{\Delta}}(0)/{k}_{B}{T}_{C}=2.3,2.1$ (SH,$\ensuremath{\mu}\mathrm{SR}$), $\mathrm{\ensuremath{\Delta}}{C}_{el}/{\ensuremath{\gamma}}_{n}{T}_{C}=2.7$. Zero-field measurements confirm presence time-reversal symmetry IrGe.