ARPES and STS investigation of Shockley states in thin metallic films and periodic nanostructures

Details ARPES and STS investigation of Shockley states in thin metallic films and periodic nanostructures ARPES and STS investigation of Shockley states in thin metallic films and periodic nanostructures

Oct 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007njph....9..391m&link_type=abstract

New Journal of Physics, Volume 9, Issue 10, pp. 391 (2007).

Physics

17

Scientific paper

Due to their extreme surface sensitivity, the Shockley states of (111) noble metal surfaces can be used to study the modifications of atomic and electronic properties of epitaxial ultra thin films and self-organized nanostructures. In metallic interfaces, the different parameters of the Shockley surface state bands (energy, effective mass and eventually spin orbit splitting) have been shown to be strongly thickness dependent. It was also possible by scanning tunneling spectroscopy to evidence a spectroscopic signature of buried interfaces. Moreover, superperiodic surface structures like the reconstruction on Au(111) vicinal surfaces or self-organized nanodots, lead to spectacular spectroscopic effects. In the vicinal Au(23 23 21) surface, the opening of tiny energy gaps associated with the reconstruction potential of such surfaces has been evidenced. Peculiar growth on these Au vicinal surfaces allows us to obtain high quality self-assembled metallic nanostructures which exhibit homogeneous electronic properties on a large spatial scale resulting from a coherent scattering of the Shockley states.

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