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Oct 28

CO adsorption on Pt-induced Ge nanowires

Authors: Danny E. P. Vanpoucke and Geert Brocks
Journal: Phys. Rev. B 81, 235434 (2010)
doi: 10.1103/PhysRevB.81.235434
IF(2010): 3.774
export: bibtex
pdf: <Phys.Rev.B> <arXiv>

Abstract

Using density-functional theory, we investigate the possible adsorption sites of CO molecules on the recently discovered Pt-induced Ge nanowires (NWs) on Ge(001). Calculated scanning tunneling microscope (STM) images are compared to experimental STM images to identify the experimentally observed adsorption sites. The CO molecules are found to adsorb preferably onto the Pt atoms between the Ge nanowire dimer segments. This adsorption site places the CO molecule in between two nanowire dimers, pushing them outward along the NW direction, blocking the nearest equivalent adsorption sites. This explains the observed long-range repulsive interaction between CO molecules on these Pt-induced nanowires.

1 ping

  1. Slow science: the case of Pt induced nanowires on Ge(001) – The Delocalized Physicist

    […] and trying to reproduce experiments seemingly supporting the “Ge-nanowire” model (e.g. simulation of CO adsorption and identification of the path along the wire the molecule […]

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