Trends in electronic structures and 
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-wave pairing for the rare-earth series in bilayer nickelate superconductor 
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Zhang, Yang; Lin, Ling-Fang; Moreo, Adriana; Maier, Thomas A.; Dagotto, Elbio

doi:10.1103/physrevb.108.165141

Cited by 43 publications

(2 citation statements)

References 41 publications

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“…The entire family of bilayer 327-type nickelates by replacing La with other rare earth elements, 𝑅3Ni2O7, has also been investigated theoretically. [87] The study found that electron correlation decreases from La to Lu, while the crystal-field splitting between Ni 3𝑑 𝑥 2 −𝑦 2 and 3𝑑 𝑧 2 remains nearly constant. The 𝑠 ± -wave pairing is predominant across all candidates if the pairing interaction contributes mainly by Ni 3𝑑 𝑧 2 electrons, and 𝑇c is expected to decrease as the radius of the rare-earth ions decreases.…”

Section: Reviewmentioning

confidence: 88%

Normal and Superconducting Properties of La₃Ni₂O₇

Wang 王,

Wen 闻,

Wu 吴

et al. 2024

Chinese Phys. Lett.

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This review provides a comprehensive overview of current research on the structural, electronic, and magnetic characteristics of the recently discovered high-temperature superconductor La3Ni2O7 under high pressures. We present the experimental results for synthesizing and characterizing this material, derived from measurements of transport, thermodynamics, and various spectroscopic techniques, and discuss their physical implications. We also explore theoretical models proposed to describe the electronic structures and superconducting pairing symmetry in La3Ni2O7, highlighting the intricate interplay between electronic correlations and magnetic interactions. Despite these advances, challenges remain in growing high-quality samples free of extrinsic phases and oxygen deficiencies and in developing reliable measurement tools for determining diamagnetism and other physical quantities under high pressures. Further investigations in these areas are essential to deepening our understanding of the physical properties of La3Ni2O7 and unlocking its superconducting pairing mechanism.

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Section: Reviewmentioning

confidence: 88%

Normal and Superconducting Properties of La₃Ni₂O₇

Wang 王,

Wen 闻,

Wu 吴

et al. 2024

Chinese Phys. Lett.

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“…Some of these mod-els are predicted to produce 𝑠± pairing symmetry. [15,[31][32][33][34][35][36][37] There are also a few theoretical works about possible magnetism in La3Ni2O7. [46][47][48] However, the interplay between magnetism and superconductivity, which is an extremely important issue in Cu-and Fe-based high-𝑇c superconductivity, has not been carefully studied in the context of La3Ni2O7.…”

mentioning

confidence: 99%

Magnetism and Superconductivity in the t–J Model of La₃Ni₂O₇ Under Multiband Gutzwiller Approximation

Xue 薛,

Wang 王

2024

Chinese Phys. Lett.

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The recent discovery of possible high temperature superconductivity in single crystals of La 3 Ni 2 O 7 under pressure renews the interest in research on nickelates. The DFT calculations reveal that both d z 2 and d x 2-y 2 orbitals are active, which suggests a minimal two-orbital model to capture the low-energy physics of this system. In this work, we study a bilayer two-orbital t-J model within multiband Gutzwiller approximation, and discuss the magnetism as well as the superconductivity over a wide range of the hole doping. Owing to the inter-orbital super-exchange process between d z 2 and d x 2-y 2 orbitals, the induced ferromagnetic coupling within layers competes with the conventional antiferromagnetic coupling, and leads to complicated hole doping dependence for the magnetic properties in the system. With increasing hole doping, the system transfers to A-AFM state from the starting G-AFM state. We also find the inter-layer superconducting pairing of d x 2-y 2 orbitals dominates due to the large hopping parameter of d z 2 along the vertical inter-layer bonds and significant Hund’s coupling between d z 2 and d x 2-y 2 orbitals. Meanwhile, the G-AFM state and superconductivity state can coexist in the low hole doping regime. To take account of the pressure, we also analyze the impacts of inter-layer hopping amplitude on the system properties.

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Strong interlayer magnetic exchange coupling in La3Ni2O7− revealed by inelastic neutron scattering

Xie,

Huo,

et al. 2024

Science Bulletin

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Trends in electronic structures and s± -wave pairing for the rare-earth series in bilayer nickelate superconductor R3Ni2O7

Cited by 43 publications

References 41 publications

Normal and Superconducting Properties of La₃Ni₂O₇

Normal and Superconducting Properties of La₃Ni₂O₇

Magnetism and Superconductivity in the t–J Model of La₃Ni₂O₇ Under Multiband Gutzwiller Approximation

Strong interlayer magnetic exchange coupling in La3Ni2O7− revealed by inelastic neutron scattering

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Trends in electronic structures and s± -wave pairing for the rare-earth series in bilayer nickelate superconductor R3Ni2O7

Cited by 43 publications

References 41 publications

Normal and Superconducting Properties of La3Ni2O7

Normal and Superconducting Properties of La3Ni2O7

Magnetism and Superconductivity in the t–J Model of La3Ni2O7 Under Multiband Gutzwiller Approximation

Strong interlayer magnetic exchange coupling in La3Ni2O7− revealed by inelastic neutron scattering

Contact Info

Product

Resources

About

Normal and Superconducting Properties of La₃Ni₂O₇

Normal and Superconducting Properties of La₃Ni₂O₇

Magnetism and Superconductivity in the t–J Model of La₃Ni₂O₇ Under Multiband Gutzwiller Approximation