Hole superconductivity in infinite-layer nickelates

J. E. Hirsch; F. Marsiglio

doi:10.1016/j.physc.2019.1353534

paper

Hole superconductivity in infinite-layer nickelates

arXiv:1909.00509 · doi:10.1016/j.physc.2019.1353534

Abstract

We propose that the superconductivity recently observed in Nd $_{0.8}$ Sr $_{0.2}$ NiO $_{2}$ with critical temperature in the range $9$ K to $15$ K results from the same charge carriers and the same mechanism that we have proposed give rise to superconductivity in both hole-doped and electron-doped cuprates: pairing of hole carriers in oxygen $p π$ orbitals, driven by a correlated hopping term in the effective Hamiltonian that lowers the kinetic energy, as described by the theory of hole superconductivity. We predict a large increase in $T_{c}$ with compressive epitaxial strain.

4 pages, 4 figures

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