Large-scale mesoscopic transport in nanostructured graphene

Haijing Zhang*, Jianming Lu, Wu Shi, Zhe Wang, Ting Zhang, Mingyuan Sun, Yuan Zheng, Qihong Chen, Ning Wang, Juhn-Jong Lin, Ping Sheng

*Corresponding author for this work

Research output: Contribution to journalArticle

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Abstract

Through exponential sample-size scaling of conductance, we demonstrate strong electron localization in three sets of nanostructured antidot graphene samples with localization lengths of 1.1, 2, and 3.4 μm. The large-scale mesoscopic transport is manifest as a parallel conduction channel to 2D variable range hopping, with a Coulomb quasigap around the Fermi level. The opening of the correlation quasigap, observable below 25 K through the temperature dependence of conductance, makes possible the exponential suppression of inelastic electron-electron scatterings and thereby leads to an observed dephasing length of 10 μm.

Original languageEnglish
Article number066805
JournalPhysical Review Letters
Volume110
Issue number6
DOIs
StatePublished - 6 Feb 2013

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  • Cite this

    Zhang, H., Lu, J., Shi, W., Wang, Z., Zhang, T., Sun, M., Zheng, Y., Chen, Q., Wang, N., Lin, J-J., & Sheng, P. (2013). Large-scale mesoscopic transport in nanostructured graphene. Physical Review Letters, 110(6), [066805]. https://doi.org/10.1103/PhysRevLett.110.066805