title: Electron-phonon coupling spectrum in photodoped pentacene crystals.
abstract: The coupling between conduction charges and the vibrational modes of the molecular lattice plays a defining role in the transport characteristics of organic semiconductors. Using electron tunneling spectroscopy, we obtain the electron--optical-phonon coupling spectrum in photodoped pentacene crystals at energies <30 meV. Comparison of the tunneling spectrum to infrared absorption data on the optical phonon density of states yields the energy dependence of the electron-phonon scattering matrix element. The integrated spectral weight of the electron-phonon coupling shows that superconductivity in pentacene is likely of electron-phonon origin.
authors.affiliation: Bell Laboratories-Lucent Technologies, 600 Mountain Avenue, Murray Hill, New Jersey 07974, USA. markl@lucent.com
authors.forename: M
authors.initials: M
authors.lastname: Lee
authors.forename: J H
authors.initials: JH
authors.lastname: Schön
authors.forename: C
authors.initials: C
authors.lastname: Kloc
authors.forename: B
authors.initials: B
authors.lastname: Batlogg