Entropy of vortex cores on the border of the superconductor-to-insulator transition in an underdoped cuprate

C. Capan, K. Behnia, J. Hinderer +5

We present a study of Nernst effect in underdoped $L{a}_{2-x}S{r}_{x}Cu{O}_4$ in magnetic fields as high as 28T. At high fields, a sizeable Nernst signal was found to persist in presence o…