Correlated electronic structure of a quintuple-layer nickelate
Harrison LaBollita, Antia S. Botana
DOI 10.1103/PhysRevB.105.085118 · Physical Review B
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Abstract
We present a comparative density-functional theory plus dynamical mean-field theory study of the two known superconducting members of the rare-earth (R) layered nickelate family: hole-doped RNiO2 (n=∞) and R6Ni5O12 (n=5). At the same nominal carrier concentration, these two materials exhibit nearly identical electronic structures and many-body correlation effects: mass enhancements, self-energies, and occupations. However, the fermiology of the quintuple-layer nickelate is more two-dimensional-like than its infinite-layer counterpart, making this new superconducting quintuple-layer nickelate more cupratelike without the need for chemical doping.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| RNiO2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 15 | Pressure not reported | unknown |
| Nd6Ni5O12 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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