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Abstract

The spin states of Co3þ ions in perovskite-type LaCoO3, governed by the complex interplay between the electron-lattice interactions and the strong electron correlations, still remain controversial due to the lack of experimental techniques which can directly detect them. In this Letter, we revealed the tensile-strain dependence of spin states, i.e., the ratio of the high- and low-spin states, in epitaxial thin films and a bulk crystal of LaCoO3 via resonant inelastic soft x-ray scattering. A tensile strain as small as 1.0% was found to realize different spin states from that in the bulk.

Journal

  • 2018-05-17

    American Physical Society

Codes

  • NII Article ID (NAID)
    120006490174
  • Text Lang
    ENG
  • Article Type
    journal article
  • ISSN
    1079-7114
  • Data Source
    IR 
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