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},
  pages={624 - 627}
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… 

Intrinsic magnetism in superconducting infinite-layer nickelates

The discovery of superconductivity in Nd0.8Sr0.2NiO2 (ref. 1) introduced a new family of layered nickelate superconductors that has now been extended to include a range of strontium doping2,3,

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.

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.

Pairing symmetry in infinite-layer nickelate superconductor

The superconducting infinite-layer nickelate family has risen as a promising platform for revealing the mechanism of high-temperature superconductivity. However, its challenging material synthesis

Pauli-limit violation in lanthanide infinite-layer nickelate superconductors

Superconductivity can be destroyed by a magnetic field with an upper bound known as the Pauli-limit in spin-singlet superconductors. 1,2 Almost all the discovered superconductors are spin-singlet,

Isotropic Pauli-limited superconductivity in the infinite-layer nickelate Nd0.775Sr0.225NiO2

The recent observation of superconductivity in thin-film infinite-layer nickelates 1 – 3 offers a different angle from which to investigate superconductivity in layered oxides 4 . A wide range of

Quantifying interaction mechanism in infinite layer nickelate superconductors

The relationship between the long-range antiferromagnetic order in cuprates and the high-temperature superconductivity in these compounds represents unresolved, nearly four-decades long scientific

Infinite-Layer Nickelate Superconductors: A Current Experimental Perspective of the Crystal and Electronic Structures

After the reward of more than 2 decades of pursuit on the high-Tc cuprate analog with the hope to obtain a better understanding of the mechanism of high-Tc superconductivity, the discovery of

Single particle tunneling spectrum of superconducting Nd1-xSrxNiO2 thin films

The results indicate both similarities and distinctions between the newly found Ni-based superconductors and cuprates and single-particle tunneling measurements on the superconducting nickelate thin films.

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.

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. The

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 small

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.1

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 transition

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.

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-temperature

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 if

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, suggesting

Penetration depth of electron-doped infinite-layer Sr 0.88 La 0.12 CuO 2 + x thin films

The in-plane penetration depth of ${\text{Sr}}_{0.88}{\text{La}}_{0.12}{\text{CuO}}_{2+x}$ thin films at various doping obtained from oxygen reduction has been measured, using ac-susceptibility

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.