Fig. 1: Gaussian Yu–Shiba–Rusinov (YSR) peaks.
From: Temperature induced shifts of Yu–Shiba–Rusinov resonances in nanowire-based hybrid quantum dots
a Sketch of the superconductor–quantum dot–metal (S-QD-N) system. b Scanning electron micrograph of the device. Bottom and side gates are false-colored in yellow and orange, respectively. The superconducting three-facet Al lead appears in blue. The normal Au lead is on the top section of the micrograph and appears in green. The section of bare InAs wire in which the QD is defined appears in red. Scale bar is 100 nm. c Fit of YSR peaks from differential conductance, dI/dVsd, data to the sum of two Gaussian (Lorentzian) curves, shown in blue (black). Δ corresponds to the edge of the superconducting gap25, and agrees with the measured gap singularities (see Methods). d dI/dVsd colormap of YSR peaks vs. plunger gate voltage, VP, and bias voltage, Vsd. Other gates are set to VN = −6.82 V, VS1 = −6.56 V, Vbg = −20 V. The color scale has been saturated to highlight the subgap features.
