@article{oai:niigata-u.repo.nii.ac.jp:00002252, author = {Mitsumoto, K. and Ono, Y.}, journal = {Physica. B, Condensed matter, Physica. B, Condensed matter}, month = {May}, note = {We investigate a heavy fermion behaviour and a deformation of an effective potential of the ions due to electron–phonon interaction for the periodic Anderson–Holstein model by using the dynamical mean-field theory combined with the exact diagonalization method. For the strong electron–phonon coupling, the system shows an anomalous heavy fermion behaviour with a large lattice fluctuation and an extreme phonon softening, and then an effective potential for the ions changes from a simple harmonic potential for the non-interacting case to a double-well potential for the strong electron–phonon coupling.}, pages = {265--266}, title = {Heavy Fermions and Rattling Motions in the Periodic Anderson-Holstein Model}, volume = {378-380}, year = {2006} }