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Theoretical study on tunneling current flowing between STM tip and acetylene-adsorbed Si(001) surface


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Title: Theoretical study on tunneling current flowing between STM tip and acetylene-adsorbed Si(001) surface
Authors: Egami, Yoshiyuki / Ono, Tomoya / Hirose, Kikuji
Issue Date: 29-Jan-2008
Citation: Nagasaki Symposium on Nano-Dynamics 2008 (NSND2008), pp.8-9
Abstract: We present first-principles electron-transport studies on scanning tunneling microscopy (STM) images of an acetylene-adsorbed Si(001) surfaces. In the simulated STM images, bright spots are observed in bare Si atoms and darker spots locates on the absorbed acetylene molecule. Tunneling current flowing between the sample and a STM tip is strongly affected by the π states of bare Si atoms and the contributions of states around the molecule to the current are smaller. This causes the STM images where bare Si atoms look higher than the adsorbed molecule.
Description: Nagasaki Symposium on Nano-Dynamics 2008 (NSND2008) 平成20年1月29日(火)於長崎大学 Invited Lecture
URI: http://hdl.handle.net/10069/9830
Type: Conference Paper
Appears in Collections:Nagasaki Symposium on Nano-Dynamics 2008 (NSND2008)

Citable URI : http://hdl.handle.net/10069/9830

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