Extended Data Fig. 3: Temperature-dependent tunneling spectra of Device 06.
From: Spin–orbit–parity coupled superconductivity in atomically thin 2M-WS2
a, Contour plot of normalized tunneling conductance of Device 06 as a function of bias voltage and temperature (magnetic field B = 0 T). b, Normalized tunneling conductance as a function of bias voltage at various temperatures. The two symmetric peaks become less prominent at elevated temperatures. c, Shifted normalized tunneling conductance as a function of bias voltage at elevated temperatures. The red dashed lines are the fit to the BTK model for the NIS junction. d, Extracted temperature-dependent superconducting gap Δ from (c). The red solid line is the fit to standard BCS theory \({{{\mathrm{{\Delta}}}}}\left( 0 \right) = {{{\mathrm{tanh}}}}\left( {\sqrt {{{{\mathrm{Ta}}}}/{{{\mathrm{T}}}}_{{{\mathrm{C}}}} - 1} } \right)\). The extracted zero-temperature gap value is Δ(0) = 1.33 meV. 2Δ(0) ≈ 3.67kBTC which is nearly in line with the BCS value of 3.52kBTC. The error bars of Δ correspond to the BTK fitting errors.
