Direct observation of heterogeneous valence state in Yb-based quasicrystalline approximants

M. Matsunami, M. Oura, K. Tamasaku +10

We study the electronic structure of Tsai-type cluster-based quasicrystalline approximants, Au${}_{64}$Ge${}_{22}$Yb${}_{14}$ (AGY-I), Au${}_{63.5}$Ge${}_{20.5}$Yb${}_{16}$ (AGY-II), and Zn$_{…