Fig. 7
a Conductivity σ plotted as a function of T between 2 and 55K under various H. The Solid line denotes a fit of of the form \(\sigma_{{{\text{2D}}}} = \sigma_{0} + \frac{p}{2}\frac{{e^{2} }}{{\hbar \pi^{2} }}\ln \left( {\frac{T}{{T_{0} }}} \right)\) to the data. Inset illustrates the corresponding ρ vs T under various H. b \(\Delta\upsigma\) as a function of lnH at various T. The solid line illustrates that \(\Delta \sigma\) ∝ lnH. The plot is a log-scale plot