Complex transport behaviors of rectangular graphene quantum dots subject to mechanical vibrations

Mengke Xu, Yisen Wang, Rui Bao, Liang Huang, Ying-Cheng Lai

Research output: Contribution to journalLetter

1 Citation (Scopus)

Abstract

Graphene-based mechanical resonators have attracted much attention due to their superior elastic properties and extremely low mass density. We investigate the effects of mechanical vibrations on electronic transport through graphene quantum dots, under the physically reasonable assumption that the time scale associated with electronic transport is much shorter than that with mechanical vibration so that, at any given time, an electron "sees" a static but deformed graphene sheet. We find that, besides periodic oscillation in the quantum transmission at the same frequency as that of mechanical vibrations, structures at finer scales can emerge as an intermediate state, which may lead to spurious higher-frequency components in the current through the device.

Original languageEnglish
Article number47006
JournalEurophysics Letters
Volume114
Issue number4
DOIs
Publication statusPublished - 16 Jun 2016

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