ARPES and STS investigation of noble metal Shockley states: Confinement in vicinal Au(1 1 1) surfaces and self-organized nanostructures

• Published in: Surface science Vol. 601; no. 18; pp. 4029 - 4035
• Main Authors: Didiot, C., Fagot-Revurat, Y., Pons, S., Kierren, B., Malterre, D.
• Format: Journal Article Conference Proceeding
• Language: English
• Published: Lausanne Elsevier B.V 15.09.2007; Amsterdam Elsevier Science; New York, NY
• Subjects: Angle resolved photoemission; Condensed matter: electronic structure, electrical, magnetic, and optical properties; Condensed matter: structure, mechanical and thermal properties; Cross-disciplinary physics: materials science; rheology; Exact sciences and technology; Physics; Quantum effects; Reconstructed surface; Scanning tunneling spectroscopy; Self-organized growth; Surface electronic phenomena; Angle resolved photoemission; Quantum effects; Reconstructed surface; Scanning tunneling spectroscopy; Surface electronic phenomena; Self-organized growth; Surface reconstruction; Vicinal surface; Self organization; Angular resolution; Photoemission; Nanostructures
• ISSN: 0039-6028; 1879-2758
• DOI: 10.1016/j.susc.2007.04.205

Spectroscopic effects associated with the superperiodic surface structure have been observed in Au(1 1 1) vicinal surfaces and nanostructured systems. In the vicinal Au(23 23 21) surface, high resolution angle resolved photoemission spectroscopy shows the opening of several gaps in the surface band structure, whereas scanning tunneling spectroscopy reveals the energy dependence of the electronic density. These combined spectroscopic data allow to determine the reconstruction potential by deducing their first Fourier components. We also demonstrate that due to the peculiar growth on this Au vicinal surface, we can obtain a self-assembled superlattice of triangular Ag islands. The high ordering of the nanostructures leads to homogenous electronic properties.