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Vibrational properties of Cu nanowires

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  • Şengün, Yasemin
  • Durukanoğlu, Sondan

Abstract

We have calculated local vibrational density of states (LDOS) of a center atom (CA) of a rectangular Cu nanowire with the axial orientation of 〈100〉, using a real space Green’s function approach with force constants extracted from interaction potentials based on the embedded atom method. The LDOS of a center atom of a strained nanowire is found to exhibit quite distinctive characteristics as compared to that of a strain-free nanowire, the most striking feature of which is the existence of high frequency modes above the bulk band even for small strain of 2.5%. We further find that these high frequency modes are shifted to even higher frequencies when the nanowire is exposed to an increasing axial strain.

Suggested Citation

  • Şengün, Yasemin & Durukanoğlu, Sondan, 2010. "Vibrational properties of Cu nanowires," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 389(15), pages 2945-2950.
    • Handle: RePEc:eee:phsmap:v:389:y:2010:i:15:p:2945-2950
    DOI: 10.1016/j.physa.2010.02.013
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