Paramagnetic Faraday rotation with spin-polarized ytterbium atoms
  We report observation of the paramagnetic Faraday rotation of spin-polarized ytterbium (Yb) atoms. As the atomic samples, we used an atomic beam, released atoms from a magneto-optical trap (MOT), and trapped atoms in a far-off-resonant trap (FORT). Since Yb is diamagnetic and includes a spin-1/2 isotope, it is an ideal sample for the spin physics, such as quantum non-demolition measurement of spin (spin QND), for example. From the results of the rotation angle, we confirmed that the atoms were almost perfectly polarized. 
M. Takeuchi, T. Takano, S. Ichihara, Y. Takasu, M. Kumakura, T.   Yabuzaki and Y. Takahashi