Superconductivity in a quintuple-layer square-planar nickelate

被引：201

作者：

Pan, Grace A. ^{[1
]}

Segedin, Dan Ferenc ^{[1
]}

LaBollita, Harrison ^{[2
]}

Song, Qi ^{[1
]}

Nica, Emilian M. ^{[2
]}

Goodge, Berit H. ^{[3
,4
]}

Pierce, Andrew T. ^{[1
]}

Doyle, Spencer ^{[1
]}

Novakov, Steve ^{[5
]}

Carrizales, Denisse Cordova ^{[1
]}

N'Diaye, Alpha T. ^{[6
]}

Shafer, Padraic ^{[6
]}

Paik, Hanjong ^{[7
]}

Heron, John T. ^{[8
]}

Mason, Jarad A. ^{[9
]}

Yacoby, Amir ^{[1
]}

Kourkoutis, Lena F. ^{[3
,4
]}

Erten, Onur ^{[2
]}

Brooks, Charles M. ^{[1
]}

Botana, Antia S. ^{[2
]}

Mundy, Julia A. ^{[1
]}

机构：

[1] Harvard Univ, Dept Phys, Cambridge, MA 02138 USA

[2] Arizona State Univ, Dept Phys, Tempe, AZ 85287 USA

[3] Cornell Univ, Sch Appl & Engn Phys, Ithaca, NY 14853 USA

[4] Cornell Univ, Kavli Inst Cornell Nanoscale Sci, Ithaca, NY USA

[5] Univ Michigan, Dept Phys, Ann Arbor, MI 48109 USA

[6] Lawrence Berkeley Natl Lab, Adv Light Source, Berkeley, CA USA

[7] Cornell Univ, Platform Accelerated Realizat Anal & Discovery In, Ithaca, NY USA

[8] Univ Michigan, Dept Mat Sci & Engn, Ann Arbor, MI 48109 USA

[9] Harvard Univ, Dept Chem & Chem Biol, Cambridge, MA 02138 USA

来源：

NATURE MATERIALS | 2022年 / 21卷 / 02期

基金：

美国国家科学基金会;

关键词：

TRANSITION;

D O I：

10.1038/s41563-021-01142-9

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

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 Nd0.8Sr0.2NiO2 (ref.( 3)). Undoped NdNiO2 belongs to a series of layered square-planar nickelates with chemical formula Ndn+1NinO2n+2 and is known as the 'infinite-layer' (n = infinity) nickelate. Here we report the synthesis of the quintuple-layer (n = 5) member of this series, Nd6Ni5O12, in which optimal cuprate-like electron filling (d(8)(.8)) is achieved without chemical doping. We observe a superconducting transition beginning at similar to 13 K. Electronic structure calculations, in tandem with magnetoresistive and spectroscopic measurements, suggest that Nd6Ni5O12 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.

引用

页码：160 / +

页数：7

共 38 条

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