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- W4367176013 abstract "We study the extent to which a three-dimensional dispersing Periodic Anderson Model (PAM) can explain the emergence of novel superconductivity in the Infinite-Layer Nickelate compounds. By going beyond frequently used 2D models, the 3D dispersing PAM allows us to incorporate effects of finite out-of-plane hopping and orbital hybridization in describing these systems. Using an unbiased functional Renormalization Group (fRG) approach, we show that $d_{x^2-y^2}$ superconductivity arises in a series of 3D {it {ab-initio}} models of the Nickelates ({it {e.g.}}$mathrm{RNiO_2}$), where R is a rare earth element. We the study the impact of going beyond the Ni-d orbital by including the R-$d_{z^2}$ and the interstitial-$s$ as hybridizing conducting bands. We explore the dependence of the models on key parameters, including the local Hubbard coupling, doping and temperature. We find the hybridization with the interstitial-$s$ band driving a 3D $d_{z^2-r^2}$-type superconductivity while out of plane hopping primarily enhances an $s$-wave superconducting order." @default.
- W4367176013 created "2023-04-28" @default.
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- W4367176013 date "2023-04-24" @default.
- W4367176013 modified "2023-09-25" @default.
- W4367176013 title "Application of Generalized Periodic Anderson Hamiltonians to the Superconducting Nickelates" @default.
- W4367176013 doi "https://doi.org/10.48550/arxiv.2304.12472" @default.
- W4367176013 hasPublicationYear "2023" @default.
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