The discovery of superconductivity in hole-doped infinite layer nickelates, RNiO₂ (R = Nd, Pr, La) has resulted in sustained interest in the field. A definitive picture of low-energy many-body states has not yet emerged. Here we provide insights into the low-energy physics, based on our embedded dynamical mean-field theory calculations, and propose a correlation (U)-temperature (T) phase diagram. The key features are a low-T Fermi liquid (FL) phase, a high-T Curie-Weiss regime, and an antiferromagnetic phase in a narrow U-T region. We associate the onset of the FL phase with partial screening of Ni-d moments; however, full screening occurs at lower temperatures. This may be related to insufficiency of conduction electrons to effectively screen the Ni-d moments, suggestive of Nozieres Exhaustion Principle. Our results suggest that RNiO₂ are in the paramagnetic state, close to an antiferromagnetic dome, making magnetic fluctuations feasible. This may be consequential for superconductivity.

空穴掺杂无限层镍酸盐R NiO ₂ ( R  = Nd, Pr, La) 中超导性的发现引起了该领域的持续兴趣。低能多体状态的确定图景尚未出现。在这里，我们基于我们的嵌入式动力学平均场理论计算提供了对低能物理学的见解，并提出了相关 ( U )-温度 ( T ) 相图。主要特征是低T费米液态 (FL) 相、高T居里-魏斯状态和窄UT中的反铁磁相地区。我们将 FL 阶段的开始与 Ni-d 矩的部分筛选联系起来；但是，完全筛选发生在较低的温度下。这可能与传导电子不足以有效屏蔽 Ni-d 矩有关，暗示了诺齐尔耗尽原理。我们的结果表明，R NiO ₂处于顺磁状态，接近反铁磁圆顶，使磁波动成为可能。这可能是超导性的结果。