Theoretical investigation of superconductivity in trilayer square-planar nickelates

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dc.citation.articleNumber020504(R)en_US
dc.citation.issueNumber2en_US
dc.citation.journalTitlePhysical Review Ben_US
dc.citation.volumeNumber102en_US
dc.contributor.authorNica, Emilian M.en_US
dc.contributor.authorKrishna, Jyotien_US
dc.contributor.authorYu, Rongen_US
dc.contributor.authorSi, Qimiaoen_US
dc.contributor.authorBotana, Antia S.en_US
dc.contributor.authorErten, Onuren_US
dc.contributor.orgRice Center for Quantum Materialsen_US
dc.date.accessioned2020-10-09T14:32:06Zen_US
dc.date.available2020-10-09T14:32:06Zen_US
dc.date.issued2020en_US
dc.description.abstractThe discovery of superconductivity in Sr-doped NdNiO2 is a crucial breakthrough in the long pursuit for nickel oxide materials with electronic and magnetic properties similar to those of the cuprates. NdNiO2 is the infinite-layer member of a family of square-planar nickelates with general chemical formula Rn+1NinO2n+2 (R = La, Pr, Nd, n=2,3,...∞). In this Rapid Communication, we investigate superconductivity in the trilayer member of this series (R4Ni3O8) using a combination of first-principles and t−J model calculations. R4Ni3O8 compounds resemble cuprates more than RNiO2 materials in that only Ni-dx2−y2 bands cross the Fermi level, they exhibit a largely reduced charge transfer energy, and as a consequence superexchange interactions are significantly enhanced. We find that the superconducting instability in doped R4Ni3O8 compounds is considerably stronger with a maximum gap about four times larger than that in Sr0.2Nd0.8NiO2.en_US
dc.identifier.citationNica, Emilian M., Krishna, Jyoti, Yu, Rong, et al.. "Theoretical investigation of superconductivity in trilayer square-planar nickelates." <i>Physical Review B,</i> 102, no. 2 (2020) American Physical Society: https://doi.org/10.1103/PhysRevB.102.020504.en_US
dc.identifier.doihttps://doi.org/10.1103/PhysRevB.102.020504en_US
dc.identifier.urihttps://hdl.handle.net/1911/109403en_US
dc.language.isoengen_US
dc.publisherAmerican Physical Societyen_US
dc.rightsArticle is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.en_US
dc.titleTheoretical investigation of superconductivity in trilayer square-planar nickelatesen_US
dc.typeJournal articleen_US
dc.type.dcmiTexten_US
dc.type.publicationpublisher versionen_US
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