Faraday rotation caused by mixed valence centers in magnetic crystals

L. D. Falkovskaya, A. Ya Fishman, V. Ya Mitrofanov, B. S. Tsukerblat

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

The peculiarities of the Faraday rotation in the imperfect garnet-type crystals for which the lattice irregularities are represented by the mixed valence clusters of transition metal ions are analyzed. The model takes into account the cubic and low symmetry crystal fields acting on the metal ions and migration of the "extra" hole. The electric dipole transitions in these types of clusters with migrating hole coupled to the spin core through the double exchange mechanism are shown to lead to a significant magnetooptical activity in the visible range of spectrum. The intensity of these transitions can be comparable or higher than those for the magnetic dipole ones in the same range of frequencies.

Original languageEnglish
Title of host publicationTrends in Magnetism
PublisherTrans Tech Publications Ltd
Pages541-544
Number of pages4
ISBN (Print)9783037850213
DOIs
StatePublished - 1 Jan 2011

Publication series

NameSolid State Phenomena
Volume168-169
ISSN (Print)1012-0394

Keywords

  • Crystal field
  • Double exchange
  • Faraday rotation
  • Magnetooptical activity
  • Mixed valence
  • Orbital degeneracy
  • Transition metal clusters

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Materials Science (all)
  • Condensed Matter Physics

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