Voltage-driven quantum oscillations in graphene

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We predict unusual (for non-relativistic quantum mechanics) electron states in graphene, which are localized within a finite-width potential barrier. The density of localized states in the sufficiently high and/or wide graphene barrier exhibits a number of singularities at certain values of the energy. Such singularities provide quantum oscillations of both the transport (e.g., conductivity) and thermodynamic properties of graphene - when increasing the barrier height and/or width, similarly to the well-known Shubnikov-de-Haas (SdH) oscillations of conductivity in pure metals. However, here the SdH-like oscillations are driven by an electric field instead of the usual magnetically-driven SdH-oscillations.
4 pages, 4 figures

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Mesoscale and Nanoscale Physics, Materials Science

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http://salesiana.dossiersoluciones.com/handle/123456789/143869

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/0712.1407
 http://arxiv.org/abs/0712.1407

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arXiv