title: Photoinduced quantum interference antiresonances in pi-conjugated polymers.
abstract: We observed photoinduced quantum interference antiresonances between several discrete infrared-active vibrations and the lower-polaron continuous absorption band in a series of pi-conjugated polymer films having superior planar orders, where the polaron transition energy is relatively small. The photoinduced Fano-type antiresonances are well explained by extending the amplitude mode model beyond the adiabatic limit. The agreement between the data and the model confirms the presence of a continuous electronic band above the polaron state. We show that high frequency modes are strongly coupled to electrons, with implications for superconductivity.
authors.affiliation: Department of Physics, Abo Akademi University, Porthansgatan 3, FIN-20500 Turku, Finland.
authors.forename: R
authors.initials: R
authors.lastname: Osterbacka
authors.forename: X M
authors.initials: XM
authors.lastname: Jiang
authors.forename: C P
authors.initials: CP
authors.lastname: An
authors.forename: B
authors.initials: B
authors.lastname: Horovitz
authors.forename: Z V
authors.initials: ZV
authors.lastname: Vardeny