Temperature and magnetic field dependent optical spectral weight in the cation-deficient colossal-magnetoresistance material (formula presented)

V. Golovanov, L. Mihaly, C. O. Homes, W. H. McCarroll, Kandalam Ramanujachary, M. Greenblatt

Research output: Contribution to journalArticlepeer-review

5 Scopus citations

Abstract

The optical reflectivity of a vacancy doped colossal magnetoresistance material (Formula presented) has been investigated on single-crystal samples as a function of temperature and at zero and 0.5 T magnetic fields. The conductivity has been evaluated by Kramers-Kronig analysis in the frequency range of 100–(Formula presented) The broad peak in the optical conductivity, observed at room temperature around (Formula presented) shifts towards zero as the ferromagnetic state develops at lower temperatures. In the transition regime the application of moderate magnetic field also induces a downward shift of the spectral weight.

Original languageEnglish (US)
Pages (from-to)153-156
Number of pages4
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume59
Issue number1
DOIs
StatePublished - Jan 1 1999

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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