T. Penney, F. Holtzberg
Physical Review Letters
Photoemission and susceptibility measurements have been made on alloys of 10% YbAl2 with 90% YAl2 or LaAl2. Similar to YbAl2, Yb in the YAl2 host is intermediate valent in the bulk consistent with a single ion picture. Yb in the LaAl2 host has a valence of 2.0-2.1 in the bulk. In both cases the surface is completely divalent and the surface 4f emission is shifted to higher binding energies relative to the bulk 4f emission.
T. Penney, F. Holtzberg
Physical Review Letters
J.L. Jordan, C.A. Kovac, et al.
Physical Review B
S. Etemad, T. Penney, et al.
Physical Review Letters
R. Berndt, R. Gaisch, et al.
Applied Physics A Solids and Surfaces