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Trends in electronic structures and s± -wave pairing for the rare-earth series in bilayer nickelate superconductor R3 Ni2 O7

Journal Article · · Physical Review. B
 [1];  [1];  [2];  [3];  [2]
  1. University of Tennessee, Knoxville, TN (United States)
  2. University of Tennessee, Knoxville, TN (United States); Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
  3. Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)

The recent discovery of pressure-induced superconductivity in the bilayer La3 Ni2 O7 (LNO) has opened a new platform for the study of unconventional superconductors. In this publication, we investigate theoretically the whole family of bilayer 327-type nickelates R3 Ni2 O7 (R = rare-earth elements) under pressure. From La to Lu, the lattice constants and volume decrease, leading to enhanced in-plane and out-of-plane hoppings, resulting in an effectively reduced electronic correlation U / W. Furthermore, the Ni's t2g states shift away from the eg states, while the crystal-field splitting between d3z2-r2 and dx2-y2 is almost unchanged. In addition, six candidates were found to become stable in the Fmmm phase, with increasing values of critical pressure as the atomic number increases. Similar to the case of LNO, the s± -wave pairing tendency dominates in all candidates, due to the nesting between the M = (π , π) and the X = (π , 0) and Y = (0 , π) points in the Brillouin zone. Then, Tc is expected to decrease as the radius of rare-earth (RE) ions decreases. In conclusion, our results suggest that LNO is already the “optimal” candidate, with Ce a close competitor, among the whole of the RE bilayer nickelates, and to increase Tc we suggest growing on special substrates with larger in-plane lattice spacings.

Research Organization:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES). Materials Sciences & Engineering Division (MSE)
Grant/Contract Number:
AC05-00OR22725
OSTI ID:
2205427
Journal Information:
Physical Review. B, Journal Name: Physical Review. B Journal Issue: 16 Vol. 108; ISSN 2469-9950
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English

References (41)

Evidence for charge and spin density waves in single crystals of La3Ni2O7 and La3Ni2O6 journal November 2022
wannier90: A tool for obtaining maximally-localised Wannier functions journal May 2008
First principles phonon calculations in materials science journal November 2015
Superconductivity in nickel-based 112 systems journal January 2022
A Superconducting Praseodymium Nickelate with Infinite Layer Structure journal June 2020
Intrinsic magnetism in superconducting infinite-layer nickelates journal August 2022
Superconductivity in an infinite-layer nickelate journal August 2019
Signatures of superconductivity near 80 K in a nickelate under high pressure journal July 2023
Stability of the interorbital-hopping mechanism for ferromagnetism in multi-orbital Hubbard models journal August 2023
Absence of superconductivity in bulk Nd1−xSrxNiO2 journal April 2020
s± pairing near a Lifshitz transition journal August 2016
Superconductivity in infinite-layer nickelates journal March 2022
Near-degeneracy of several pairing channels in multiorbital models for the Fe pnictides journal February 2009
Perturbation expansion of variational principles at arbitrary order journal August 1995
Adiabatic density-functional perturbation theory journal August 1995
Effects of momentum-dependent quasiparticle renormalization on the gap structure of iron-based superconductors journal May 2020
Similarities and differences between nickelate and cuprate films grown on a SrTiO 3 substrate journal November 2020
Orbital-selective Peierls phase in the metallic dimerized chain MoOCl 2 journal August 2021
Coupled Hubbard ladders at weak coupling: Pairing and spin excitations journal February 2022
Prediction of orbital-selective Mott phases and block magnetic states in the quasi-one-dimensional iron chain Ce 2 O 2 Fe Se 2 under hole and electron doping journal February 2022
Enhancing Tc in a composite superconductor/metal bilayer system: A dynamical cluster approximation study journal June 2022
Correlated electronic structure, orbital-selective behavior, and magnetic correlations in double-layer La3Ni2O7 under pressure journal September 2023
Possible s± -wave superconductivity in La3Ni2O7 journal October 2023
Ab initiomolecular dynamics for liquid metals journal January 1993
Projector augmented-wave method journal December 1994
Efficient iterative schemes for ab initio total-energy calculations using a plane-wave basis set journal October 1996
Electron-energy-loss spectra and the structural stability of nickel oxide: An LSDA+U study journal January 1998
Pairing symmetry in a two-orbital Hubbard model on a square lattice journal June 2007
Phonon-phonon interactions in transition metals journal September 2011
Pair structure and the pairing interaction in a bilayer Hubbard model for unconventional superconductivity journal November 2011
Role of vertex corrections in the matrix formulation of the random phase approximation for the multiorbital Hubbard model journal December 2016
Effective pairing interaction in a system with an incipient band journal April 2019
Origin of Insulating Ferromagnetism in Iron Oxychalcogenide Ce 2 O 2 FeSe 2 journal August 2021
Bilayer Two-Orbital Model of La3Ni2O7 under Pressure journal September 2023
Green’s-function approach to linear response in solids journal May 1987
Superconductivity above 90 K in the square-planar compound system A Ba 2 Cu 3 O 6 + x with A=Y , La, Nd, Sm, Eu, Gd, Ho, Er and Lu journal May 1987
Generalized Gradient Approximation Made Simple journal October 1996
Pairing in the two-dimensional Hubbard model from weak to strong coupling journal January 2020
Similarities and Differences between LaNiO 2 and CaCuO 2 and Implications for Superconductivity journal February 2020
Electronic Structure Trends Across the Rare-Earth Series in Superconducting Infinite-Layer Nickelates journal March 2021
VESTA 3 for three-dimensional visualization of crystal, volumetric and morphology data journal October 2011