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Träfflista för sökning "WFRF:(Diaz Tendero S.) srt2:(2008-2009)"

Sökning: WFRF:(Diaz Tendero S.) > (2008-2009)

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1.
  • Diaz-Tendero, S., et al. (författare)
  • Electron propagation along Cu nanowires supported on a Cu(111) surface
  • 2008
  • Ingår i: Nano Letters. - : American Chemical Society (ACS). - 1530-6992 .- 1530-6984. ; 8:9, s. 2712-2717
  • Tidskriftsartikel (refereegranskat)abstract
    • We present a joint experimental-theoretical study of the one-dimensional band of excited electronic states with sp character localized on Cu nanowires supported on a Cu(III) surface. Energy dispersion and lifetime of these states have been obtained, allowing the determination of the mean distance traveled by an excited electron along the nanowire before it escapes into the substrate. We show that a Cu nanowire supported on a Cu(III) surface can guide a one-dimensional electron flux over a short distance and thus can be considered as a possible component for nanoelectronics devices.
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2.
  • Diaz-Tendero, S., et al. (författare)
  • Excited electron dynamics in Cu nanowires supported on a Cu(111) surface
  • 2009
  • Ingår i: Physical Review B - Condensed Matter and Materials Physics. - 2469-9950 .- 2469-9969. ; 79:11, s. 115438 (artno)-
  • Tidskriftsartikel (refereegranskat)abstract
    • We present a theoretical study of the excited electron dynamics in infinite Cu monoatomic chains (nanowires) supported on a Cu(111) surface. A joint approach based on the wave packet propagation and the density functional theory is used. The nanowire-induced potential obtained from ab initio density functional theory calculations serves as an input for the wave-packet propagation study of the excited electron dynamics. The energy dispersion and the lifetime of an unoccupied one-dimensional (1D) nanowire-localized electronic band with sp character are obtained. From the group velocity and lifetime of the 1D sp-band states, it follows that an excited electron can travel about four to five atomic sites along the nanowire before its escape into the bulk. We show that the surface projected band gap and the surface Brillouin zone backfolding of the substrate states play a fundamental role in the lifetime of the nanowire-localized states.
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  • Resultat 1-2 av 2
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tidskriftsartikel (2)
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refereegranskat (2)
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Díaz-Tendero, S. (2)
Olsson, Fredrik E., ... (2)
Borisov, A. G. (2)
Gauyacq, J. P. (2)
Fölsch, Stefan (1)
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Chalmers tekniska högskola (2)
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