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Interplay of spin-orbit coupling and hybridization in Ca3LiOsO6 and Ca3LiRuO6

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arxiv 1711.10393 v1 pith:VH3764MP submitted 2017-11-28 cond-mat.str-el cond-mat.mtrl-sci

Interplay of spin-orbit coupling and hybridization in Ca3LiOsO6 and Ca3LiRuO6

S. Calder , D. J. Singh , V. O. Garlea , M. D. Lumsden , Y. G. Shi , K. Yamaura , A. D. Christianson This is my paper
classification cond-mat.str-el cond-mat.mtrl-sci
keywords couplingca3lioso6interactionsmagneticspin-orbitca3liruo6hybridizationintermediate
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The electronic ground state of Ca3LiOsO6 was recently considered within an intermediate coupling regime that revealed J=3/2 spin-orbit entangled magnetic moments. Through inelastic neutron scattering and density functional theory we investigate the magnetic interactions and probe how the magnetism is influenced by the change in hierarchy of interactions as we move from Ca3LiOsO6 (5d3) to Ca3LiRuO6 (4d3). An alteration of the spin-gap and ordered local moment is observed, however the magnetic structure, Neel temperature and exchange interactions are unaltered. To explain this behavior it is necessary to include both spin-orbit coupling and hybridization, indicating the importance of an intermediate coupling approach when describing 5$d$ oxides.

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