Pseudogap Formation and Heavy Carrier Dynamics in Intermediate Valence YbAl3

H. Okamura, T. Michizawa, T. Nanba +1

Infrared optical conductivity [$\sigma (\omega )$] of the intermediate valence compound YbAl${}_3$ has been measured at temperatures 8 K $\le T\le$ 690 K to study its microscopic electronic s…