Coverage-Driven Electronic Decoupling of Fe-Phthalocyanine from a Ag(111) Substrate

Citations Over TimeTop 10% of 2011 papers

Abstract

Coverage-dependent structural and electronic properties of Fe-phthalocyanine (FePc) molecules adsorbed on Ag(111) have been investigated by scanning tunneling microscopy/spectroscopy and density functional calculations. While spectra of single FePc molecules are dominated by a broad signature of Fe d orbitals, spectra of molecules in an ordered superstructure resolve spectroscopic contributions from individual dz2 and dxz/dyz orbitals. Calculations suggest that an increased molecule–surface distance in the superstructure and a change of the Ag(111) surface electronic structure cause the spectral changes, which are consistent with a partial electronic decoupling of the molecules from the substrate. A progressive evolution toward a gap around the Fermi level is observed for molecules on the first and second molecular layer.

Related Papers

• → Evidence for the Eu 4f Character of Conduction-Band Edge at the Eu2O3 Surface Studied by Scanning Tunneling Spectroscopy(2020)11 cited
• → Scanning tunneling microscopy and spectroscopy of NiTe2(2022)4 cited
• → Fermi-Level Pinning at the Sb/GaAs(110) Surface Studied by Scanning Tunneling Spectroscopy(1988)206 cited
• → UV–visible spectral study on the stability of lead phthalocyanine complexes(2006)15 cited
• → On the γ-Fe2O3 superstructure observation by high resolution electron microscopy(1990)16 cited