Journal Article

FZJ-2018-03887

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Antiferromagnetic correlations in the metallic strongly correlated transition metal oxide LaNiO3

Guo, H. ; Li, Z. W. ; Zhao, L. ; Hu, Z. ; Chang, C. F. ; Kuo, C.-Y. ; Schmidt, W.FZJ* ; Piovano, A. ; Pi, T. W. ; Sobolev, O. ; Khomskii, D. I. ; Tjeng, L. H. ; Komarek, A. C. (Corresponding author)

2018
Nature Publishing Group London

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Please use a persistent id in citations: http://hdl.handle.net/2128/19210  doi:10.1038/s41467-017-02524-x

Abstract: The material class of rare earth nickelates with high Ni3+ oxidation state is generating continued interest due to the occurrence of a metal-insulator transition with charge order and the appearance of non-collinear magnetic phases within this insulating regime. The recent theoretical prediction for superconductivity in LaNiO3 thin films has also triggered intensive research efforts. LaNiO3 seems to be the only rare earth nickelate that stays metallic and paramagnetic down to lowest temperatures. So far, centimeter-sized impurity-free single crystal growth has not been reported for the rare earth nickelates material class since elevated oxygen pressures are required for their synthesis. Here, we report on the successful growth of centimeter-sized LaNiO3 single crystals by the floating zone technique at oxygen pressures of up to 150 bar. Our crystals are essentially free from Ni2+ impurities and exhibit metallic properties together with an unexpected but clear antiferromagnetic transition.

Keyword(s): Magnetic Materials (1st) ; Magnetism (2nd)

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Contributing Institute(s):

1. Streumethoden (JCNS-2)
2. Streumethoden (PGI-4)
3. JARA-FIT (JARA-FIT)
4. JCNS-ILL (JCNS-ILL)
5. JCNS-FRM-II (JCNS-FRM-II)

Research Program(s):

1. 144 - Controlling Collective States (POF3-144) (POF3-144)
2. 524 - Controlling Collective States (POF3-524) (POF3-524)
3. 6212 - Quantum Condensed Matter: Magnetism, Superconductivity (POF3-621) (POF3-621)
4. 6213 - Materials and Processes for Energy and Transport Technologies (POF3-621) (POF3-621)
5. 6G4 - Jülich Centre for Neutron Research (JCNS) (POF3-623) (POF3-623)

Experiment(s):

1. ILL-IN12: Cold neutron 3-axis spectrometer

Appears in the scientific report 2018

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