Magnetic penetration depth and $T_c$ in superconducting nickelates

Abstract

We compute the nominal magnetic penetration depth of $R$NiO${}_2$ ($R=$ La, Nd) from first principles calculations and discuss the results in relation to the superconducting $T_c$. We find a marked discrepancy with the well established phenomenology that correlates these two quantities in cuprates (Uemura plot). We also consider the 2D ultrathin limit and estimate the maximum attainable $T_c$ to be $\sim 180$ K according to the Nelson-Kosterliz universal relation between the superfluid density and the transition temperature.

3 pages, 1 table, 2 figures

References in corpus (4)

• Magnetic Penetration Depth in Unconventional Superconductors
• Self-doped Mott insulator for parent compounds of nickelate superconductors
• Two-band model for magnetism and superconductivity in nickelates
• Hole superconductivity in infinite-layer nickelates

Cited by in corpus (1)

• Polarity induced electronic and atomic reconstruction at NdNiO2/SrTiO3 interfaces