Induced magnetic two-dimensionality by hole doping in the superconducting infinite-layer nickelate Nd1−xSrxNiO2
Siheon Ryee, Hongkee Yoon, Taek Jung Kim, Min Yong Jeong, Myung Joon Han
DOI 10.1103/PhysRevB.101.064513 · Physical Review B
Active bibliographic source — not scientific approval
Bibliographic access preserves source history; it does not approve extracted materials or validate reported claims. Review warnings on each occurrence separately.
Abstract
To understand the superconductivity recently discovered in Nd0.8Sr0.2NiO2, we carried out LDA+DMFT (local density approximation plus dynamical mean-field theory) and magnetic force response calculations. The on-site correlation in Ni-3d orbitals causes notable changes in the electronic structure. The calculated temperature-dependent susceptibility exhibits the Curie-Weiss behavior, indicating the localized character of its moment. From the low-frequency behavior of self-energy, we conclude that the undoped phase of this nickelate is Fermi-liquid-like contrary to cuprates. Interestingly, the estimated correlation strength by means of the inverse of quasiparticle weight is found to increase and then decrease as a function of hole concentration, forming a domelike shape. Another finding is that magnetic interactions in this material become two-dimensional by hole doping. While the undoped NdNiO2 has the sizable out-of-plane interaction, hole dopings strongly suppress it. This two-dimensionality is maximized at the hole concentration δ≈0.25. Further analysis as well as the implications of our findings are presented.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Nd0.8Sr0.2NiO2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| Nd1-xSrxNiO2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
Similar papers
Robust dx2−y2-wave superconductivity of infinite-layer nickelates
similarity 0.96Xianxin Wu et al.
Source status unknown — claims are unverified
Erratum: Induced magnetic two-dimensionality by hole doping in the superconducting infinite-layer nickelate Nd1−xSrxNiO2 [Phys. Rev. B 101, 064513 (2020)]
similarity 0.95Siheon Ryee et al.
Source status unknown — claims are unverified
Spin fluctuations sufficient to mediate superconductivity in nickelates
similarity 0.95Paul Worm et al.
Source status unknown — claims are unverified
Induced magnetic two-dimensionality by hole doping in the superconducting infinite-layer nickelate NdSrNiO
similarity 0.94Ryee, Siheon et al. · 2020 · arXiv:1909.05824
Source status unknown — claims are unverified
Distinct pairing symmetries of superconductivity in infinite-layer nickelates
similarity 0.93Zhan Wang et al.
Source status unknown — claims are unverified
Phase Diagram and Superconducting Dome of Infinite-Layer Nd1−xSrxNiO2 Thin Films
similarity 0.93Shengwei Zeng et al.
Source status unknown — claims are unverified