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Article overview
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Conductance signatures of electron confinement induced by strained nanobubbles in graphene | | D. A. Bahamon
; Zenan Qi
; Harold S. Park
; Vitor M.Pereira
; David K. Campbell
; | | Date: |
29 Mar 2015 | | Abstract: | The effect of graphene nanobubbles on the transport properties of graphene
nanoribbons is investigated using a combined molecular dynamics-tight-binding
simulation scheme. We show that the conductance, density of states, and current
density of zigzag or armchair graphene nanoribbons are modified by the presence
of a nanobubble. In particular, we establish that low-energy electrons can be
confined in the vicinity or within the nanobubbles by the delicate interplay
between the pseudomagnetic field pattern created by the shape of the bubble,
mode mixing, and substrate interaction. The coupling between the confined
evanescent state and the propagating modes can be enhanced under different
clamping and substrate conditions, leading to Fano resonances in the
conductance traces. | | Source: | arXiv, 1503.8488 | | Services: | Forum | Review | PDF | Favorites | |
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