Every reference with a DOI in the deposited reference list resolved to a known
work in Crossref or DataCite at the dated check, and none carried a retraction,
withdrawal, or removal notice.
The 32 checked references that resolve
resolves10.1038/372532a0Superconductivity in a layered perovskite without copper
resolves10.1103/PhysRevB.70.165109Infinite-layer<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mi mathvariant="normal">La</mml:mi><mml:mi mathvariant="normal">Ni</mml:mi><mml:msub><mml:mi mathvariant="normal">O</mml:mi><mml:mn>2</mml:mn></mml:msub></mml:mrow></mml:math>: <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msup><mml:mi mathvariant="normal">Ni</mml:mi><mml:mrow><mml:mn>1</mml:mn><mml:mo>+</mml:mo></mml:mrow></mml:msup></mml:math>is not<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msup><mml:mi mathvariant="normal">Cu</mml:mi><mml:mrow><mml:mn>2</mml:mn><mml:mo>+</mml:mo></mml:mrow></mml:msup></mml:math>
resolves10.1103/PhysRevLett.100.016404Orbital Order and Possible Superconductivity in<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msub><mml:mi>LaNiO</mml:mi><mml:mn>3</mml:mn></mml:msub><mml:mo>/</mml:mo><mml:msub><mml:mi>LaMO</mml:mi><mml:mn>3</mml:mn></mml:msub></mml:math>Superlattices
resolves10.1038/334231a0The parent structure of the layered high-temperature superconductors
resolves10.1038/351549a0Electron-doped superconductivity at 40 K in the infinite-layer compound Sr1–yNdyCu02
resolves10.1038/356775a0Superconductivity at 110 K in the infinite-layer compound (Sr1-xCax)1-yCuO2
resolves10.1039/F29837901181Reduced forms of LaNiO
<sub>3</sub>
perovskite. Part 1.—Evidence for new phases: La
<sub>2</sub>
Ni
<sub>2</sub>
O
<sub>5</sub>
and LaNiO
<sub>2</sub>
resolves10.1021/ja991573iSodium Hydride as a Powerful Reducing Agent for Topotactic Oxide Deintercalation: Synthesis and Characterization of the Nickel(I) Oxide LaNiO<sub>2</sub>
resolves10.1016/S1293-2558(03)00111-0Synthesis of the infinite layer Ni(I) phase NdNiO2+x by low temperature reduction of NdNiO3 with sodium hydride
resolves10.1063/1.3078276Reversible changes of epitaxial thin films from perovskite LaNiO3 to infinite-layer structure LaNiO2
resolves10.7567/APEX.9.061101Direct observation of infinite NiO<sub>2</sub> planes in LaNiO<sub>2</sub> films
resolves10.1039/C6DT01737AFormation of defect-fluorite structured NdNiO
<sub>x</sub>
H
<sub>y</sub>
epitaxial thin films via a soft chemical route from NdNiO
<sub>3</sub>
precursors
resolves10.1021/ja063031oLa<sub>3</sub>Ni<sub>2</sub>O<sub>6</sub>: A New Double T‘-type Nickelate with Infinite Ni<sup>1+/2+</sup>O<sub>2</sub> Layers
resolves10.1038/nphys4149Large orbital polarization in a metallic square-planar nickelate
resolves10.1038/nature14165From quantum matter to high-temperature superconductivity in copper oxides
resolves10.1103/PhysRevB.52.13563Influence of carrier injection on the metal-insulator transition in electron- and hole-doped<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="italic">R</mml:mi></mml:mrow><mml:mrow><mml:mn>1</mml:mn><mml:mi mathvariant="normal">−</mml:mi><mml:mi mathvariant="italic">x</mml:mi></mml:mrow></mml:msub></mml:mrow></mml:math><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="italic">A</mml:mi></mml:mrow><mml:mrow><mml:mi mathvariant="italic">x</mml:mi></mml:mrow></mml:msub></mml:mrow></mml:math><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">NiO</mml:mi></mml:mrow><mml:mrow><mml:mn>3</mml:mn></mml:mrow></mml:msub></mml:mrow></mml:math>perovskites
resolves10.1103/PhysRevB.45.8209Systematic study of insulator-metal transitions in perovskites RNiO3 (R=Pr,Nd,Sm,Eu) due to closing of charge-transfer gap
resolves10.1021/cg100178yOrientation Change of an Infinite-Layer Structure LaNiO<sub>2</sub> Epitaxial Thin Film by Annealing with CaH<sub>2</sub>
resolves10.1103/PhysRevB.82.144529Penetration depth of electron-doped infinite-layer<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mtext>Sr</mml:mtext></mml:mrow><mml:mrow><mml:mn>0.88</mml:mn></mml:mrow></mml:msub><mml:msub><mml:mrow><mml:mtext>La</mml:mtext></mml:mrow><mml:mrow><mml:mn>0.12</mml:mn></mml:mrow></mml:msub><mml:msub><mml:mrow><mml:mtext>CuO</mml:mtext></mml:mrow><mml:mrow><mml:mn>2</mml:mn><mml:mo>+</mml:mo><mml:mi>x</mml:mi></mml:mrow></mml:msub></mml:mrow></mml:math>thin films
resolves10.1063/1.4967004High-precision measurement of magnetic penetration depth in superconducting films
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