Physics – Condensed Matter – Mesoscale and Nanoscale Physics
Scientific paper
2010-02-19
Phys. Rev. B 81, 127401 (2010)
Physics
Condensed Matter
Mesoscale and Nanoscale Physics
2 pages 1 fig, PRB comment
Scientific paper
The observation of a stable doublet pattern in the field-emission electron microscopy of a linear atomic chain requires a stable mechanism breaking the axial symmetry, which is not identified correctly by Mikhailovskij et al. [Phys. Rev. B 80, 165404 (2009)]. Using microscopic calculations, we attribute the observed pattern to the symmetry breaking produced by the ligand where the chain is attached, plus carbon pi-bonding alternation.
Manini Nicola
Onida Giovanni
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