Antiferromagnetic correlations in the metallic strongly correlated transition metal oxide LaNiO3

H. Guo, Z. W. Li, L. Zhao, Z. Hu, C. F. Chang, C.-Y. Kuo, W. Schmidt, A. Piovano, T. W. Pi, O. Sobolev, D. I. Khomskii, L. H. Tjeng and A. C. Komarek ()
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H. Guo: Max-Planck-Institute for Chemical Physics of Solids
Z. W. Li: Max-Planck-Institute for Chemical Physics of Solids
L. Zhao: Max-Planck-Institute for Chemical Physics of Solids
Z. Hu: Max-Planck-Institute for Chemical Physics of Solids
C. F. Chang: Max-Planck-Institute for Chemical Physics of Solids
C.-Y. Kuo: Max-Planck-Institute for Chemical Physics of Solids
W. Schmidt: Jülich Centre for Neutron Science at ILL, CS 20156
A. Piovano: Institut Laue-Langevin (ILL)
T. W. Pi: National Synchrotron Radiation Research Center (NSRRC)
O. Sobolev: Institut für Physikalische Chemie
D. I. Khomskii: Physics Institute II, University of Cologne
L. H. Tjeng: Max-Planck-Institute for Chemical Physics of Solids
A. C. Komarek: Max-Planck-Institute for Chemical Physics of Solids

Nature Communications, 2018, vol. 9, issue 1, 1-7

Abstract: 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.

Date: 2018
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DOI: 10.1038/s41467-017-02524-x

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