Optical evidence for a spin-filter effect in the charge transport of $E{u}_{0.6}C{a}_{0.4}{B}_6$

A. Perucchi, G. Caimi, H. R. Ott +3

We have measured the optical reflectivity $R(\omega )$ of $E{u}_{0.6}C{a}_{0.4}{B}_6$ as a function of temperature between 1.5 and 300 $K$ and in external magnetic fields up to 7 $T$. The sl…