[1] ETH Zurich, Tech Chem Lab, CH-8092 Zurich, Switzerland
来源:
LASER TECHNIQUES FOR SURFACE SCIENCE III
|
1998年
/
3272卷
关键词:
electron-electron scattering;
two pulse correlation;
surface;
time-resolved photoemission;
aluminum;
D O I:
10.1117/12.307123
中图分类号:
O64 [物理化学(理论化学)、化学物理学];
学科分类号:
070304 ;
081704 ;
摘要:
Femtosecond time-resolved two photon photoemission has been used to investigate the dynamics of photoexcited electrons at a polycrystalline Al surface. The measured relaxation time data are very different from the behavior predicted for a Fermi Liquid. We observed a distinct increase in the decay rate of the excited states. The origin of this strong deviation from the theoretical prediction may be transport effects or band structure effects induced by the periodic crystal lattice.