MISC

2016年3月1日

Effect of the sigma-band of graphene on an electric current in metal/graphene/metal junctions

Technology Reports of Kansai University
  • Syuta Honda

開始ページ
9
終了ページ
13

We examined the conductance in metallic electrode/graphene/metallic electrode junctions, accounting for both the n- And the cr-bands of the graphene. Although the cr-band has been neglected in previous theoretical studies concerned with transport properties, we found that the cr-band of graphene significantly affects electrical transport. In our calculations, we used an atomistic tight-binding model and the Kubo-Landauer formula. The conductance values we obtained taking the cr-band of the graphene into account are three orders of magnitude larger than those obtained without considering the cr-band. The cr-band has a band gap at the Fermi level and does not affect conductance in bulk graphene, but it does indirectly hybridize with the rc-band of the graphene via metallic electrodes and contribute to conductance in junctions.

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https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84978245690&origin=inward

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