Deformed lattice structure of C 60 3
Abstract Using a tight-binding model with electron-phonon coupling based on the modified Su-Schriffer-Heeger model Hamiltonian, we obtained the deformed lattice structures for C 60 3− which is charge-transfer state for superconducting M 3 C 60 compounds. The deformed structures are C i ( λ =0.1, 0.3) and C 2v ( λ =0.5), which are different to D 5d of C 60 1− in the same values of λ. Here λ means the dimensionless coupling constant (S 2 /KT). We also have shown the bond length difference between C 60 3− and C 60 .