Low-lying excitations at the rare-earth site due to the rattling motion in the filled skutterudite revealed by NMR and NQR
Yusuke Nakai, Kenji Ishida, Hitoshi Sugawara, Daisuke Kikuchi, and Hideyuki Sato
Phys. Rev. B 77, 041101(R) (2008) - Published 8 January, 2008