Stabilization of silicon honeycomb chains by trivalent adsorbates

Details Stabilization of silicon honeycomb chains by trivalent adsorbates Stabilization of silicon honeycomb chains by trivalent adsorbates

2006-11-30

arxiv.org/abs/cond-mat/0611776v1

EPL 77, 36003 (2007)

Physics

Condensed Matter

Other Condensed Matter

to be published in Europhysics Letters

Scientific paper

10.1209/0295-5075/77/36003

The atomic structure of self-assembled quasi-one-dimensional Gd chains on Si(111) has been investigated by low-energy electron diffraction and scanning tunneling microscopy. Based on comparison between Gd and Ca chains we show that this Gd induced surface reconstruction belongs to the class of honeycomb chain-channel structures. This clearly demonstrates that, besides monovalent and divalent adsorbates, also trivalent adsorbates such as Gd stabilize silicon honeycomb chains. Consequently silicon honeycomb chains emerge as an universal building block in adsorbate induced silicon surface reconstructions.

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