Transverse Voltage in Superconducting Films: Patterns in Current, Amplitude and Peak Width

While others have observed transverse voltage in superconducting films, no study has compared these signals in a variety of systems. Our goal was to see if any universal patterns exist between films of different materials (Nb, NbZr, NbCN, NbN) and thicknesses (40 nm - 3160 nm). To investigate this, we swept current through superconducting films and compared the amplitudes of the transverse voltage signals, the widths of the peaks, and the currents at which these peaks occurred for multiple temperatures near T$_c$. Although we saw universal behavior in the current, we did not see any scaling in the peak widths or amplitudes. We hope to continue to compare to various models of transverse voltage.