Inhaltszusammenfassung

We present a simple tight-binding model for the two-dimensional energy bands of polyacene field-effect transistors and for the coupling of these bands to lattice vibrations of their host molecular crystal. we argue that the strongest electron-phonon interactions in these systems originate from the dependence of intermolecule hopping amplitudes on collective molecular motion, and introduce a generalized su-schrieffer-heeger model and is parameter-free once the band mass has been specified. we ...We present a simple tight-binding model for the two-dimensional energy bands of polyacene field-effect transistors and for the coupling of these bands to lattice vibrations of their host molecular crystal. we argue that the strongest electron-phonon interactions in these systems originate from the dependence of intermolecule hopping amplitudes on collective molecular motion, and introduce a generalized su-schrieffer-heeger model and is parameter-free once the band mass has been specified. we compute alpha f-2(omega) as a function of two-dimensional hole density, and are able to explain the onset of superconductivity near 2d carrier density n(2d) similar to 10(14) cm(-2), observed in recent experiments.» weiterlesen» einklappen

Autoren

Klassifikation

DFG Fachgebiet:
3.17 - Theoretische Chemie

DDC Sachgruppe:
Physik