Figure 3
From: Vortex dynamics in NbTi films at high frequency and high DC magnetic fields
Upper critical field as a function of the reduced temperature. Solid symbols were deduced from CPWR measurements of the critical temperature for different applied DC magnetic fields, with \(T_{c0}\) the critical temperature at zero field (see text). Red crosses were obtained from DC resistance measurements, by the 90% of \(R_n\) criterion. Open symbols are evaluations of \(B_{c2}\) at \(T=6 \, \text {K}\), obtained by the TDGL analysis of \(\rho _{ff}(T)\) data, as described below . Solid lines are fit of the CPWRs data (see text), extrapolated to lower temperatures (dotted lines) to check the matching with the points from TDGL analysis.
