J.H. Kaufman, Owen R. Melroy, et al.
Synthetic Metals
The technique of subpicosecond angle resolved laser photoemission spectroscopy is described. Investigations of the dynamics of electrons excited into normally unoccupied states at the cleaved Ge(111)2 × 1 surface are detailed. In particular, electrons which are excited into bulk states near the surface are observed to scatter into the normally unoccupied antibonding π* band whose minimum is at J̄ in the surface Brillouin zone. Cooling of the sample to near liquid nitrogen temperatures has permitted us to directly delineate the role played by optical phonons in the surface electron dynamics. In addition hole dynamics are reported and renormalization of the surface band gap is observed. © 1993.
J.H. Kaufman, Owen R. Melroy, et al.
Synthetic Metals
Heinz Schmid, Hans Biebuyck, et al.
Journal of Vacuum Science and Technology B: Microelectronics and Nanometer Structures
Arvind Kumar, Jeffrey J. Welser, et al.
MRS Spring 2000
Imran Nasim, Melanie Weber
SCML 2024