Emergent units of itinerant spin-state excitations in LaCoO$_3$

K. Tomiyasu; T. Nomura; Y. Kobayashi; S. Ishihara; S. Ohira-Kawamura; M. Kofu

Emergent units of itinerant spin-state excitations in LaCoO$_3$

Strongly Correlated Electrons 2018-08-20 v1

Authors: K. Tomiyasu , T. Nomura , Y. Kobayashi , S. Ishihara , S. Ohira-Kawamura , M. Kofu

Abstract

Spin crossover is expected to enrich unusual physical states in various types of condensed matter. Through inelastic neutron scattering, we study the spin-state excitations in the canonical and advanced platform, LaCoO $_3$ , and reveal that the spatial correlation robustly maintains the seven-Co-site size below 300 K and the internal Co- $d$ electrons are spatially delocalized. By combining theoretical calculations, this dynamical short-range order is identified as a new collective unit for describing spin-state with dual spin-state nature beyond the conventional one-Co-site classification.

Keywords

spin crossover lacoo3 spin-state excitations inelastic neutron scattering short-range order collective unit condensed matter

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@article{arxiv.1808.05888,
  title  = {Emergent units of itinerant spin-state excitations in LaCoO$_3$},
  author = {K. Tomiyasu and T. Nomura and Y. Kobayashi and S. Ishihara and S. Ohira-Kawamura and M. Kofu},
  journal= {arXiv preprint arXiv:1808.05888},
  year   = {2018}
}

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11 pages, 7 figures, 1 table

Emergent units of itinerant spin-state excitations in LaCoO$_3$

Abstract

Keywords

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