Superconductivity in an infinite-layer nickelate

  title={Superconductivity in an infinite-layer nickelate},
  author={Danfeng Li and Kyuho Lee and Bai Yang Wang and Motoki Osada and S Crossley and Hye Ryoung Lee and Yi Cui and Yasuyuki Hikita and Harold Y. Hwang},
The discovery of unconventional superconductivity in (La,Ba)2CuO4 (ref. 1) has motivated the study of compounds with similar crystal and electronic structure, with the aim of finding additional superconductors and understanding the origins of copper oxide superconductivity. Isostructural examples include bulk superconducting Sr2RuO4 (ref. 2) and surface-electron-doped Sr2IrO4, which exhibits spectroscopic signatures consistent with a superconducting gap3,4, although a zero-resistance state has… Expand
Superconductivity in a quintuple-layer square-planar nickelate
The synthesis of the quintuple-layer member of this series of layered square-planar nickelates, Nd6Ni5O12, in which optimal cuprate-like electron filling is achieved without chemical doping and a superconducting transition beginning at ~13 K is observed. Expand
Electronic structure of the parent compound of superconducting infinite-layer nickelates
X-ray spectroscopy and density functional theory are used to show that the electronic structure of the parent compound of superconducting infinite-layer nickelates, while similar to the copper-based high-temperature superconductors, has significant differences. Expand
Nickelate Superconductivity without Rare-Earth Magnetism: (La,Sr)NiO2.
It is found that with significant materials optimization, substantial portions of the La1- x Srx NiO2 phase diagram can enter the regime of coherent low-temperature transport and the unexpected indication of a superconducting ground state in undoped LaNiO2 is observed. Expand
Absence of superconductivity in bulk Nd1−xSrxNiO2
Superconductivity at 9–15 K was recently discovered in Nd0.8Sr0.2NiO2 films. Since the Ni1+ ionic state in NdNiO2 may have the same 3d9 outer-shell electronic orbital as in cuprate superconductors,Expand
Absence of superconductivity in bulk Nd1-xSrxNiO2 (x = 0.2, 0.4)
Recently superconductivity at 9 - 15 K was discovered in an infinite-layer nickelate (Nd0.8Sr0.2NiO2 films), which has received enormous attention. Since the Ni1+ ionic state in NdNiO2 may have theExpand
The dawn of the nickel age of superconductivity
Whereas high-temperature superconductivity in cuprates has been studied for 30 years, during the past year it has been reported in nickelates. This raises new questions for physicists and chemistsExpand
Observation of perfect diamagnetism and interfacial effect on the electronic structures in infinite layer Nd0.8Sr0.2NiO2 superconductors
  • Shengwei Zeng, Xinmao Yin, +13 authors A. Ariando
  • Materials Science
  • 2021
Nickel-based complex oxides have served as a playground for decades in the quest for a copper-oxide analog of the high-temperature (high-Tc) superconductivity. They may provide key points towardsExpand
Superconductivity in a minimal two-band model for infinite-layer nickelates
While the recent discovery of superconductivity in infinite-layer nickelates has drawn considerable attention, a common ingredient of the fundamental building blocks to describe their ground statesExpand
Observation of perfect diamagnetism and interfacial effect on the electronic structures in Nd0.8Sr0.2NiO2 superconducting infinite layers
Nickel-based complex oxides have served as a playground for decades in the quest for a copper-oxide analog of the high-temperature (high-Tc) superconductivity. They may provide key points towardsExpand
Intrinsic Spin Susceptibility and Pseudogaplike Behavior in Infinite-Layer LaNiO_{2}.
The present results imply a considerable exchange interaction in infinite-layer nickelates, which sets a strong constraint for the proposed theoretical models, and unambiguously confirms a paramagnetic ground state in LaNiO_{2. Expand


Superconductivity in a layered perovskite without copper
FOLLOWING the discovery of superconductivity at ∼30 K in La2−xBaxCuO4 (ref. 1), a large number of related compounds have been found that are superconducting at relatively high temperatures. TheExpand
The parent structure of the layered high-temperature superconductors
Oxide superconductors in the system Tl2Ba2Can–1CunO4+2n (ref. 1) have transition temperatures (Tc) above 100 K, increasing with n. So far, stacking sequences up to n = 3 have been found in smallExpand
Signature of high temperature superconductivity in electron doped Sr2IrO4
Sr2IrO4 was predicted to be a high temperature superconductor upon electron doping since it highly resembles the cuprates in crystal structure, electronic structure and magnetic coupling constants.Expand
Superconductivity at 110 K in the infinite-layer compound (Sr1-xCax)1-yCuO2
THE 'infinite-layer' parent structure1 of the copper oxide superconductors (Fig. 1) is the simplest structure containing the CuO2 sheets that are apparently essential to high-transition-temperatureExpand
Electron-doped superconductivity at 40 K in the infinite-layer compound Sr1–yNdyCu02
THE known copper oxide superconductors all have intergrowth structures consisting of superconducting layers of fixed oxygen content alternating with non-superconducting oxide layers. Siegrist et al.1Expand
Observation of a d-wave gap in electron-doped Sr2IrO4
Sr2IrO4 bears a striking electronic resemblance to the cuprate superconductors, except the iridate is an insulator. Introducing electrons into Sr2IrO4 leads to a d-wave gap, suggestingExpand
Large orbital polarization in a metallic square-planar nickelate
High-temperature cuprate superconductivity remains a defining problem in condensed-matter physics. Among myriad approaches to addressing this problem has been the study of alternative transitionExpand
Electronic structure of possible nickelate analogs to the cuprates
The electronic structure of various nickel oxides with nickel valence varying from 1+ to 3+ was investigated with the aim to find similarities and differences to the isoelectronic cuprates. Only ifExpand
Possible highTc superconductivity in the Ba−La−Cu−O system
Metallic, oxygen-deficient compounds in the Ba−La−Cu−O system, with the composition BaxLa5−xCu5O5(3−y) have been prepared in polycrystalline form. Samples withx=1 and 0.75,y>0, annealed below 900°CExpand
Infinite-layer LaNiO 2 : Ni 1 + is
The Ni ion in LaNiO2 has the same formal ionic configuration 3d9 as does Cu in isostructural CaCuO2, but it is reported to be nonmagnetic and probably metallic whereas CaCuO2 is a magnetic insulator.Expand