Magnetic-field-driven superconductor-insulator transition in stripe-ordered La$_{1.48}$Nd$_{0.4}$Sr$_{0.12}$CuO$_{4}$

The effects of the magnetic field ($H$) in underdoped cuprates, the nature of the $H$-driven superconductor-insulator transition (SIT), and the interplay with charge ordering are some of the key questions in high-temperature superconductivity. A recent study of the $H$-driven SIT in highly underdoped ($T_c\sim 4$~K) La$_{2-x}$Sr$_x$CuO$_4$ (LSCO) revealed an intermediate phase, with two quantum critical points separating the superconductor and the insulator. While charge distribution in highly underdoped LSCO seems to be inhomogeneous, its sister compound La$_{2-x}$Nd$_{0.4}$Sr$_x$CuO$_4$ (LNSCO) with $x=0.12$ is known to have a charge-stripe order already in $H=0$ at low enough temperatures ($T$). In order to address the above issues, we carry out detailed measurements of the in-plane and out-of-plane magnetoresistance with different $H$ orientations and over a wide range of $T$ on LNSCO single crystals with $x=0.12$ and $T_c\sim 4$~K. The results will provide insight into the universality of the $H$-driven SIT in cuprates with different types or, at least, varying degrees of charge order.