Noise Measurements in Thin-film Strange Metal Sr₃Ru₂O₇ Nanowires

Sr₃Ru₂O₇ (SRO327) is a material with a strange metal phase extending from a magnetic quantum critical point at H_c~7.8T. Noise measurements of SRO327 nanowires will allow direct comparison of the noise response in regimes of strange metallicity and normal metallicity within the same material. These noise measurements seek to probe the electron-phonon coupling and electron-electron interactions via Johnson-Nyquist noise and shot noise respectively. SRO327’s unique capability to tune in and out of the strange metal phase with magnetic field will allow direct comparison to measurements taken in the normal metal phase. Initial results will be presented, as well as estimates of the electron-phonon energy relaxation rate in this material.