Abstract
The electronic structure of ex situ grown highly oriented thin films of the quasi-1D organic metal tetrathiafulvalene tetracyanoquinodimethane (TTF–TCNQ) has been characterized by means of temperature-dependent high-resolution angle-resolved photoemission spectroscopy and X-ray photoelectron spectroscopy. Band dispersion near the Fermi level (EF) is observed at low temperatures (∼100 K) for as-received samples. At room temperature both charged and neutral TCNQ species (TCNQ− and TCNQ0, respectively) coexist at the surface. The presence of TCNQ0, partly due to surface thermal vibrations, is reduced at lower temperatures because of the smaller surface oscillation amplitudes.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have