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Publication Citation: End States in One-Dimensional Chains

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Author(s): Jason Crain; Daniel T. Pierce;
Title: End States in One-Dimensional Chains
Published: February 04, 2005
Abstract: End states-the zero-dimensional analogs of the two-dimensional states that occur at a crystal surface-were observed at the ends of one-dimensional atom chains that were self-assembled by depositing gold on the vicinal Si(553) surface. Scanning tunneling spectroscopy measurements of the differential conductance along the chains revealed quantized states in isolated segments with differentiated states forming over end atoms. A comparison to a tight-binding model demonstrated how the formation of electronic end states transforms the density of states and the energy levels within the chains.
Citation: Science
Volume: 307
Issue: 5710
Pages: pp. 703 - 706
Keywords: end-states;one-dimensional chains;scanning tunneling spectroscopy;vicinal silicon surfaces
Research Areas: Scanning tunneling microscopy (STM)