Figure 3 | Scientific Reports

Figure 3

From: Experimental signatures of nodeless multiband superconductivity in a \(\hbox {2H-Pd}_{0.08} \hbox {TaSe}_2\) single crystal

Figure 3

In-plane resistivity \(\rho \) of \(\hbox {2H-Pd}_{0.08} \hbox {TaSe}_2\) crystal for (a) \(H \parallel ab\) and (b) \(H \parallel c\). The dashed line in (b) shows a linear extrapolation of \(\rho (T)\) to estimate the \(T_c\) at \(\mu _0H\) = 2.3 T. (c) Temperature dependence of upper critical fields for \(H \parallel ab\) (\(H^{ab}_{c2}\)) and \(H\parallel c\) (\(H^{c}_{c2}\)). Also plotted are the best fit results based on the Werthamer–Helfand–Hohenberg (WHH) model (dashed lines) for a single-band superconductor and the two-band model (solid lines). The inset in (c) shows an enlarged view of the \(H_{c2}^{ab}\) and the fitting lines near \(T_c\). (d) The anisotropy ratio \(\gamma _H = H^{ab}_{c2}/H^{c}_{c2}\) is presented (green solid triangles), exhibiting strong temperature dependence. The solid line is obtained from the fitting curves for the two-band model shown in (c).

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