Local probing of charge and orbital-ordering-induced anisotropy with polarization-modulated infrared reflection difference microspectroscopy

J. S. Lee, M. Schmidt, U. Schade, S. W. Cheong, K. H. Kim

Research output: Contribution to journalArticlepeer-review

3 Scopus citations

Abstract

We investigated optical anisotropy of a Bi0.3 Ca0.7 MnO3+δ crystal induced by charge and orbital orderings using infrared reflection difference microspectroscopy in combination with polarization modulation. Besides a drastic change in the anisotropic response below the charge ordering transition around 16°C, we found an additional change in the optical anisotropy at a slightly lower temperature of around 13°C, which is accompanied by a rotation of the optical axis by 45°. We attribute this intriguing behavior to the signature of the orbital ordering that is not coincident with the charge ordering transition with decrease in temperature.

Original languageEnglish (US)
Article number073102
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume79
Issue number7
DOIs
StatePublished - Feb 13 2009

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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