Collective modes, Yb-valence instability and metal-insulator transition in the cage-cluster borides RB12 (R- Ho, Er, Tm, Yb, Lu, Zr)

Gennady Komandin, Elena Zhukova, Boris Gorshunov +6

A thorough study of the wide-range (40-35000 cm-1) dynamic conductivity spectra of the rare-earth (RE) dodecaborides RB12 (R- Ho, Er and Tm) and Tm1-xYbxB12 substitutional solid so…