Magneto-optical effect induced by spin chirality of the itinerant ferromagnet Nd2Mo2O7

I. Kézsmárki, S. Onoda, Y. Taguchi, T. Ogasawara, M. Matsubara, S. Iguchi, N. Hanasaki, N. Nagaosa, Y. Tokura

Research output: Contribution to journalArticlepeer-review

12 Citations (Scopus)


It is demonstrated both theoretically and experimentally that the spin chirality associated with a noncoplanar spin configuration produces a magneto-optical effect. Numerical study of the two-band Hubbard model on a triangle cluster shows that the optical Hall conductivity σxy(ω) is proportional to the spin chirality. The detailed comparative experiments on pyrochlore-type molybdates R2Mo2O7 with R=Nd (Ising-like moments) and R=Gd (Heisenberg-like ones) clearly distinguishes the two mechanisms, i.e., spin chirality and spin-orbit interactions. It is concluded that for R=Nd,σxy(ω) is dominated by the spin chirality for the dc (ω=0) and the d→d incoherent intraband optical transitions between Mo atoms.

Original languageEnglish
Article number094427
JournalPhysical Review B - Condensed Matter and Materials Physics
Issue number9
Publication statusPublished - 2005 Sept 1
Externally publishedYes

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics


Dive into the research topics of 'Magneto-optical effect induced by spin chirality of the itinerant ferromagnet Nd2Mo2O7'. Together they form a unique fingerprint.

Cite this