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Crystal-field states in NaCoO2 and in wet cobalt superconductors (NaxCoO2)

R. J. Radwanski Z. Ropka
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Abstract

We claim that for calculations of the electronic structure of 3d oxides very strong electron correlations have to be taken into account similarly to those assumed in many-electron crystal field approach. For Co3+ ions in NaxCoO2.yH2O there are 15 low lying many-electron states within 0.1 eV as can be obtained in the many-electron CEF approach with taking into account the spin-orbit coupling. We claim, that the used by us Hamiltonian for the trigonal distortion is correct.

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R. J. Radwanski Z. Ropka. 2006-02-24. Crystal-field states in NaCoO2 and in wet cobalt superconductors (NaxCoO2). https://arxiv.org/abs/cond-mat/0602592

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