Magneto-optical effect induced by spin chirality of the itinerant ferromagnet Nd2Mo2O7
- 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.
| Author: | István KézsmárkiORCiDGND, S. Onoda, Y. Taguchi, T. Ogasawara, M. Matsubara, S. Iguchi, N. Hanasaki, N. Nagaosa, Y. Tokura |
|---|---|
| URN: | urn:nbn:de:bvb:384-opus4-442133 |
| Frontdoor URL | https://opus.bibliothek.uni-augsburg.de/opus4/44213 |
| ISSN: | 1098-0121OPAC |
| ISSN: | 1550-235XOPAC |
| Parent Title (English): | Physical Review B |
| Publisher: | American Physical Society (APS) |
| Type: | Article |
| Language: | English |
| Year of first Publication: | 2005 |
| Publishing Institution: | Universität Augsburg |
| Release Date: | 2018/11/29 |
| Volume: | 72 |
| Issue: | 9 |
| First Page: | 094427 |
| DOI: | https://doi.org/10.1103/physrevb.72.094427 |
| Institutes: | Mathematisch-Naturwissenschaftlich-Technische Fakultät |
| Mathematisch-Naturwissenschaftlich-Technische Fakultät / Institut für Physik | |
| Mathematisch-Naturwissenschaftlich-Technische Fakultät / Institut für Physik / Lehrstuhl für Experimentalphysik V | |
| Dewey Decimal Classification: | 5 Naturwissenschaften und Mathematik / 53 Physik / 530 Physik |
| Licence (German): |  Deutsches Urheberrecht |
