2 papers
cond-mat.str-el1997
Charged excitons in doped extended Hubbard model systems
J. van den Brink, R. Eder, G. A. Sawatzky
We show that the charge transfer excitons in a Hubbard model system including nearest neighbor Coulomb interactions effectively attain some charge in doped systems and become visib…
cond-mat1995
Excitons in C_60 studied by Temperature Dependent Optical Second- Harmonic Generation
A. M. Janner, R. Eder, B. Koopmans +2
The electric dipole forbidden T_1g excitonic state of solid C_60 at omega=1.81 eV can be probed with a Second-Harmonic Generation (SHG) experiment. We show that the SHG line shape…