Dissipation in graphene and nanotube resonators

Details Dissipation in graphene and nanotube resonators Dissipation in graphene and nanotube resonators

2007-04-17

arxiv.org/abs/0704.2225v3

Phys. Rev. B 76, 125427 (2007)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

Published version with updated references

Scientific paper

10.1103/PhysRevB.76.125427

Different damping mechanisms in graphene nanoresonators are studied: charges in the substrate, ohmic losses in the substrate and the graphene sheet, breaking and healing of surface bonds (Velcro effect), two level systems, attachment losses, and thermoelastic losses. We find that, for realistic structures and contrary to semiconductor resonators, dissipation is dominated by ohmic losses in the graphene layer and metallic gate. An extension of this study to carbon nanotube-based resonators is presented.

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