Magnetic penetration depth and Tc in superconducting nickelates
F. Bernardini, V. Olevano, A. Cano
DOI 10.1103/PhysRevResearch.2.013219 · Physical Review Research
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Abstract
We compute the nominal magnetic penetration depth of RNiO2 (R=La, Nd) from first-principles calculations and discuss the results in relation to the superconducting Tc. We find a marked discrepancy with the well-established phenomenology that correlates these two quantities in cuprates (Uemura plot). We also consider the two-dimensional ultrathin limit and estimate the maximum attainable Tc to be ∼180 K according to the Nelson-Kosterliz universal relation between the superfluid density and the transition temperature.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| NdNiO2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 15 | Pressure not reported | unknown |
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