https://doi.org/10.1140/epjb/e20020123
Giant magneto-optical response of ferromagnetic EuB6
1
Laboratorium für Festkörperphysik, ETH Zurich, 8093 Zurich, Switzerland
2
NHMFL-FSU, Tallahassee FL 32306, USA
Corresponding author: a degiorgi@solid.phys.ethz.ch
Received:
7
February
2002
Published online: 15 May 2002
EuB6, a ferromagnet with a Curie temperature of 
K, exhibits very large
magnetoresistive effects at temperatures both above and below TC. We present our
magneto-optical investigations, including measurements of the reflectivity and Kerr
rotation, covering the spectral range from the infrared up to the ultraviolet, as a function
of temperature between 1.5 and 20 K and in external magnetic fields from 0 to 10 T. The
Kerr rotation at high fields and low temperatures is enormous. The spectra reflect aspects
of the large magnetoresistance and are shown to discriminate between the spectroscopic
response of localized and itinerant electronic states in the ferromagnetic state.
PACS: 78.20.Ls – Magnetooptical effects / 75.50.Cc – Other ferromagnetic metals and alloys
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 2002
