Strong magneto-optical effects in ACr2 O4 (A=Fe, Co) spinel oxides generated by tetrahedrally coordinated transition metal ions

V. Kocsis, S. Bordács, J. Deisenhofer, L. F. Kiss, K. Ohgushi, Y. Kaneko, Y. Tokura, I. Kézsmárki

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

Magneto-optical effects have been investigated over the infrared visible spectral range in ACr2O4 (A=Fe,Co) spinel oxides with noncollinear spin orders in their ground states. We found large magneto-optical Kerr rotation and ellipticity at the on-site d-d transitions of the A2+ ions located within the charge gap. The magneto-optical Kerr rotation of Kerr≈12 observed in CoCr2O4 is unprecedentedly large among magnetic semiconductors and points toward the uniqueness of tetrahedrally coordinated Co2+ ions in generating strong magneto-optical response. Criteria of strong magneto-optical effects emerging at on-site d-d transitions of transition metal ions are discussed.

Original languageEnglish
Article number125140
JournalPhysical Review B
Volume97
Issue number12
DOIs
Publication statusPublished - Mar 23 2018

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Magnetooptical effects
Oxides
spinel
Transition metals
Metal ions
metal ions
transition metals
Ions
Magnetic semiconductors
oxides
ellipticity
uniqueness
Ground state
emerging
ions
Infrared radiation
ground state
spinell

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Cite this

Strong magneto-optical effects in ACr2 O4 (A=Fe, Co) spinel oxides generated by tetrahedrally coordinated transition metal ions. / Kocsis, V.; Bordács, S.; Deisenhofer, J.; Kiss, L. F.; Ohgushi, K.; Kaneko, Y.; Tokura, Y.; Kézsmárki, I.

In: Physical Review B, Vol. 97, No. 12, 125140, 23.03.2018.

Research output: Contribution to journalArticle

Kocsis, V. ; Bordács, S. ; Deisenhofer, J. ; Kiss, L. F. ; Ohgushi, K. ; Kaneko, Y. ; Tokura, Y. ; Kézsmárki, I. / Strong magneto-optical effects in ACr2 O4 (A=Fe, Co) spinel oxides generated by tetrahedrally coordinated transition metal ions. In: Physical Review B. 2018 ; Vol. 97, No. 12.
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