Robust d_(x~2-y~2)-wave superconductivity of infinite-layer nickelates

Xianxin Wu; Domenico Di Sante; Tilman Schwemmer; Werner Hanke; Harold Y. Hwang; Srinivas Raghu; Ronny Thomale

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Robust d_(x~2-y~2)-wave superconductivity of infinite-layer nickelates

机译：无限层镍酸盐的稳健d_（x〜2-y〜2）波超导性

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Motivated by the recent observation of superconductivity in strontium-doped NdNiO_2, we study the superconducting instabilities in this system from various vantage points. Starting with first-principles calculations, we construct two distinct tight-binding models, a simpler single-orbital as well as a three-orbital model, both of which capture the key low-energy degrees of freedom to varying degrees of accuracy. We study superconductivity in both models using the random phase approximation. We then analyze the problem at stronger coupling, and study the dominant pairing instability in the associated t-J model limit. In all instances, the dominant pairing tendency is in the d_(x~2-y~2) channel, analogous to the cuprate superconductors.

机译：根据最近在掺锶NdNiO_2中超导性的观察结果，我们从各个角度研究了该系统中的超导不稳定性。从第一性原理计算开始，我们构建了两个不同的紧密绑定模型，一个简单的单轨道模型和一个三轨道模型，这两个模型均以不同的精度捕获了关键的低能自由度。我们使用随机相位逼近研究两种模型的超导性。然后，我们分析强耦合时的问题，并研究相关t-J模型限制中的显性配对不稳定性。在所有情况下，主要配对趋势都在d_（x〜2-y〜2）通道中，类似于铜酸盐超导体。

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《Physical review》 |2020年第6期|060504.1-060504.5|共5页
作者
Xianxin Wu; Domenico Di Sante; Tilman Schwemmer; Werner Hanke; Harold Y. Hwang; Srinivas Raghu; Ronny Thomale;
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Institut für Theoretische Physik und Astrophysik Universität Würzburg Am Hubland Campus Süd 97074 Würzburg Germany;

Stanford Institute for Materials and Energy Sciences SLAC National Accelerator Laboratory Menlo Park California 94025 USA Department of Applied Physics Stanford University Stanford California 94305 USA;

Stanford Institute for Materials and Energy Sciences SLAC National Accelerator Laboratory Menlo Park California 94025 USA Department of Physics Stanford University Stanford California 94305 USA;

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1. Robust dx2-y2-wave superconductivity of infinite-layer nickelates [J] . Physical review, B . 2020,第6期

机译：无限层镍的鲁棒DX2-Y2波超导性
2. Electronic structure and d_(x~2-y~2)-wave superconductivity in FeS [J] . Yang Yang, Wan-Sheng Wang, Hong-Yan Lu, Physical review. B, Condensed Matter And Materals Physics . 2016,第10期

机译：FeS中的电子结构和d_（x〜2-y〜2）波超导
3. Mechanism of d_(x~2-y~2)-wave superconductivity based on hole-doping-induced spin texture in high T_c cuprates [J] . T. Morinari Physical review. B, Condensed Matter And Materials Physics . 2006,第6期

机译：高T_c铜酸盐中基于空穴掺杂自旋织构的d_（x〜2-y〜2）波超导机理
4. Superconductivity in infinite-layer nickelates [C] . Motoki Osada, Bai Y. Wang, Danfeng Li, 応用物理学会学術講演会;応用物理学会 . 2020

机译：无限层镍中的超导性
5. First-principles study of charge density waves, electron-phonon coupling, and superconductivity in transition-metal dichalcogenides [D] . Ge, Yizhi 2013

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6. Doping evolution of the Mott–Hubbard landscape in infinite-layer nickelates [O] . Berit H. Goodge, Danfeng Li, Kyuho Lee, 2021

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7. Tunneling spectra for ($d_{x^2-y^2}+is$)-wave superconductors versus tunneling spectra for ($d_{x^2-y^2}+id_{xy}$)-wave superconductors [O] . Stefanakis, N. 2001

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8. Bipolaronic charge density waves, polaronic spin density waves and high (Tc) superconductivity [R] . Aubry, S 1992

机译：双极电荷密度波，极化自旋密度波和高（Tc）超导电性

Robust d_(x~2-y~2)-wave superconductivity of infinite-layer nickelates

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