Superconductivity in a quintuple-layer square-planar nickelate

Since the discovery of high-temperature superconductivity in copper oxide materials 1 , there have been sustained efforts to both understand the origins of this phase and discover new cuprate-like superconducting materials 2 . One prime materials platform has been the rare-earth nickelates and, inde...

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Bibliographic Details
Published in:Nature materials Vol. 21; no. 2; pp. 160 - 164
Main Authors: Pan, Grace A., Ferenc Segedin, Dan, LaBollita, Harrison, Song, Qi, Nica, Emilian M., Goodge, Berit H., Pierce, Andrew T., Doyle, Spencer, Novakov, Steve, Córdova Carrizales, Denisse, N’Diaye, Alpha T., Shafer, Padraic, Paik, Hanjong, Heron, John T., Mason, Jarad A., Yacoby, Amir, Kourkoutis, Lena F., Erten, Onur, Brooks, Charles M., Botana, Antia S., Mundy, Julia A.
Format: Journal Article
Language:English
Published: London Nature Publishing Group UK 01.02.2022
Nature Publishing Group
Springer Nature - Nature Publishing Group
Subjects:
639/301/119/544
639/766/119/1003
Biomaterials
Chemistry and Materials Science
Condensed Matter Physics
CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY
Copper oxides
Doping
Electronic structure
Electrons
High temperature
Hot Temperature
Letter
Magnetoresistivity
MATERIALS SCIENCE
Molecular beam epitaxy
Nanotechnology
Nickel
Optical and Electronic Materials
Physics
Rare earth elements
Superconductivity
Superconductors
Temperature
Thin films
ISSN:1476-1122, 1476-4660, 1476-4660
Online Access:Get full text
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Summary:Since the discovery of high-temperature superconductivity in copper oxide materials 1 , there have been sustained efforts to both understand the origins of this phase and discover new cuprate-like superconducting materials 2 . One prime materials platform has been the rare-earth nickelates and, indeed, superconductivity was recently discovered in the doped compound Nd 0.8 Sr 0.2 NiO 2 (ref. 3 ). Undoped NdNiO 2 belongs to a series of layered square-planar nickelates with chemical formula Nd n +1 Ni n O 2 n +2 and is known as the ‘infinite-layer’ ( n  =  ∞ ) nickelate. Here we report the synthesis of the quintuple-layer ( n  = 5) member of this series, Nd 6 Ni 5 O 12 , in which optimal cuprate-like electron filling ( d 8.8 ) is achieved without chemical doping. We observe a superconducting transition beginning at ~13 K. Electronic structure calculations, in tandem with magnetoresistive and spectroscopic measurements, suggest that Nd 6 Ni 5 O 12 interpolates between cuprate-like and infinite-layer nickelate-like behaviour. In engineering a distinct superconducting nickelate, we identify the square-planar nickelates as a new family of superconductors that can be tuned via both doping and dimensionality. The authors report a superconducting transition beginning at 13 K in films of the quintuple-layer nickelate Nd 6 Ni 5 O 12 .
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USDOE Office of Science (SC), Basic Energy Sciences (BES). Materials Sciences & Engineering Division
SC0021925; AC02-05CH11231; SC0020128
ISSN:1476-1122
1476-4660
1476-4660
DOI:10.1038/s41563-021-01142-9