207 citations · 592 across the 22 of their papers we have counts for
5 papers · 2 filters
Exciton effects in soliton and bipolaron lattice states of doped electron-phonon Peierls systems
Kikuo Harigaya, Yukihiro Shimoi, Shuji Abe
Exciton effects on soliton and bipolaron lattice states are investigated using an electron-lattice Peierls model with long-range Coulomb interactions. The Hartree-Fock (HF) approxi…
Optical response of C and C fullerenes:
Kikuo Harigaya, Shuji Abe
Molecular exciton effects in the neutral and maximally doped C (C) are considered using a tight binding model with long-range Coulomb interactions and bond disorder.…
Optical absorption spectra of A6C60 and A6C70: Reduction of effective Coulomb interactions in Frenkel excitons
Kikuo Harigaya
We theoretically investigate optical absorption spectra of $\soc^{6-}$ and $\rug^{6-}$, and discuss relations with the optical properties of alkali metal doped fullerides $A_6\soc$…
Optical Absorption in Higher Fullerenes: Effects of Symmetry Reduction
Kikuo Harigaya
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 paramete…
Optical Absorption in C_70 and C_76: Effects of Symmetry Reduction
Kikuo Harigaya, Shuji Abe
Optical absorption spectra of C_70 and C_76 are calculated by a tight binding model with a long ranged Coulomb interaction. The spectrum of C_70 is in overall agreement with the ex…