Vibrational properties of Cu nanowires

Yasemin Şengün and Sondan Durukanoğlu

Physica A: Statistical Mechanics and its Applications, 2010, vol. 389, issue 15, 2945-2950

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.

Keywords: Vibrational density of states; High frequency modes; Metal nanowire; Strained Cu nanowire (search for similar items in EconPapers)
Date: 2010
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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:389:y:2010:i:15:p:2945-2950

DOI: 10.1016/j.physa.2010.02.013

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