Nonlinear Optical Response in Higher Fullerenes
نویسندگان
چکیده
منابع مشابه
Coulomb interaction effects on nonlinear optical response in C60, C70, and higher fullerenes
Nonlinear optical properties in the fullerene C60 and the extracted higher fullerenes – C70, C76, C78, and C84 – are theoretically investigated by using the exciton formalism and the sum-overstates method. We find that off-resonant third order susceptibilities of higher fullerenes are a few times larger than those of C60. The magnitude of nonlinearity increases as the optical gap decreases in h...
متن کاملOptical absorption spectra and geometric effects in higher fullerenes
The optical excitations in C70 and higher fullerenes, including isomers of C76, C78, and C84, are theoretically investigated. We use a tight binding model with long-range Coulomb interactions, treated by the Hartree-Fock and configuration-interaction methods. We find that the optical excitations in the energy region smaller than about 4 eV have most of their amplitudes at the pentagons. The osc...
متن کاملOptical Absorption in Higher Fullerenes: Effects of Symmetry Reduction
Optical absorption spectra of higher fullerenes (C70 and C76) as well as of C60 are calculated by a tight binding model with a long range Coulomb interaction. A reasonable parameter set gives calculated spectra which are in overall agreement with the experiments of of C60 and C70 in solutions. The variations of the spectral shape are discussed relating with the symmetry reduction going from C60...
متن کاملA pr 1 99 6 Optical absorption spectra and geometric effects in higher fullerenes ( Running head : Optical absorption in higher fullerenes )
The optical excitations in C70 and higher fullerenes, including isomers of C76, C78, and C84, are theoretically investigated. We use a tight binding model with long-range Coulomb interactions, treated by the Hartree-Fock and configuration-interaction methods. We find that the optical excitations in the energy region smaller than about 4 eV have most of their amplitudes at the pentagons. The osc...
متن کاملPhotophysical Properties in C60 and Higher Fullerenes
The optical excitations in C60 and higher fullerenes, including isomers of C76, C78, and C84, are theoretically investigated. We use a tight binding model with long-range Coulomb interactions, treated by the Hartree-Fock and configuration-interaction methods. We find that the optical excitations in the energy region smaller than about 4 eV have most of their amplitudes at the pentagons. The osc...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Japanese Journal of Applied Physics
سال: 1997
ISSN: 0021-4922
DOI: 10.1143/jjap.36.l485