Electronic structure effects in stability and quantum conductance in 2D gold nanowires

Details Electronic structure effects in stability and quantum conductance in 2D gold nanowires Electronic structure effects in stability and quantum conductance in 2D gold nanowires

2011-03-28

arxiv.org/abs/1103.5280v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

29 pages

Scientific paper

We have investigated the stability and conductivity of unsupported, two dimensional infinite gold nanowires using ab-initio density functional theory (DFT). Two dimensional ribbon like nanowires, with 1-5 rows of gold atoms in the non-periodic direction and with di?erent possible structures have been considered. The nanowires with > 2 rows of atoms exhibit dimerization, similar to ?nite wires, along the non-periodic direction. Our results show that in these zero thickness nanowires, the parallelogram motif is the most stable. A comparison between parallelogram and rectangular shaped nanowires of increasing width indicates that zero thickness (111) oriented wires have a higher stability over (100). A detailed analysis of the electronic structure, reveals that the (111) oriented structures show increased delocalization of s and p electrons in addition to a stronger delocalization of the d electrons and hence are the most stable. The density of states show that the nanowires are metallic and conducting except for the double zigzag structure, which, is semiconducting. Conductance calculations show transmission for a wide range of energies in all the stable nanowires with more than two rows of atoms. The conductance channels are not purely s and have strong contributions from the d levels and weak contributions from the p levels.

Affiliated with

Also associated with

No associations

Rating

Electronic structure effects in stability and quantum conductance in 2D gold nanowires does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Electronic structure effects in stability and quantum conductance in 2D gold nanowires, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Electronic structure effects in stability and quantum conductance in 2D gold nanowires will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-706742