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25 April 2024 |
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Article overview
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Hexagon versus trimer formation in in nanowires on Si(111): energetics and quantum conductance | A A Stekolnikov
; K Seino
; F Bechstedt
; S Wippermann
; W G Schmidt
; A Calzolari
; M Buongiorno Nardelli
; | Date: |
12 Jan 2007 | Journal: | Phys Rev Lett, 98 (2), 026105 | Abstract: | The structural and electronic properties of the quasi-one-dimensional In/Si(111) surface system are calculated from first principles. It is found that the symmetry lowering of the In chains is energetically favorable, provided neighboring nanowires are correlated, giving rise to a doubling of the surface unit cell both along and perpendicular to the chain direction. The recently suggested formation of hexagons within the In nanowires [C. González, F. Flores, and J. Ortega, Phys. Rev. Lett. 96, 136101 (2006)]--in clear contrast to the trimer formation proposed earlier-drastically modifies the electron transport along the In chains, in agreement with experiment. | Source: | PubMed, pmid17358624 | Services: | Forum | Review | Favorites |
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