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arXiv · 1609.06301

Anomalous Dynamical Behavior of Freestanding Graphene Membranes

M. L. Ackerman·P. Kumar·M. Neek-Amal·P. M. Thibado·F. M. Peeters·S. P. Singh
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Abstract

We report subnanometer, high-bandwidth measurements of the out-of-plane (vertical) motion of atoms in freestanding graphene using scanning tunneling microscopy. By tracking the vertical position over a long time period, a 1000-fold increase in the ability to measure space-time dynamics of atomically thin membranes is achieved over the current state-of-the-art imaging technologies. We observe that the vertical motion of a graphene membrane exhibits rare long-scale excursions characterized by both anomalous mean-squared displacements and Cauchy-Lorentz power law jump distributions.

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M. L. Ackerman, P. Kumar, M. Neek-Amal, P. M. Thibado, F. M. Peeters, S. P. Singh. 2016-09-20. Anomalous Dynamical Behavior of Freestanding Graphene Membranes. https://doi.org/10.1103/physrevlett.117.126801

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