Preempted phonon-mediated superconductivity in the infinite-layer nickelates
Quintin N. Meier, J. B. de Vaulx, Fabio Bernardini, Antía S. Botana, Xavier Blase, Valério Olevano, A. Cano
Abstract
To be, or not to be, phonon mediated. That is the first question to answer for new superconductors, especially if they show important analogies with the cuprates. Here, the infinite-layer nickelates are scrutinized by means of first-principles calculations, including dynamical correlations in the GW approximation. The results suggest phonon-mediated superconductivity with low-${T}_{c}$ in the parent compounds. However, the analysis of doping and pressure confirm the non-phonon mediated nature of the mechanism behind the maximal ${T}_{c}$ observed in these systems.
Topics & Concepts
SuperconductivityPhononCondensed matter physicsLayer (electronics)PhysicsMaterials scienceNanotechnologyHigh-pressure geophysics and materialsRare-earth and actinide compoundsMagnetic and transport properties of perovskites and related materials