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arXiv · 1110.2984

High-resolution spatial mapping of the temperature distribution of a Joule self-heated graphene nanoribbon

Young-Jun Yu·Melinda Y. Han·Stephane Berciaud·Alexandru B. Georgescu·Tony F. Heinz·Louis E. Brus·Kwang S. Kim·Philip Kim
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Abstract

We investigate the temperature distributions of Joule self-heated graphene nanoribbons (GNRs) with a spatial resolution finer than 100 nm by scanning thermal microscopy (SThM). The SThM probe is calibrated using the Raman G mode Stokes/anti-Stokes intensity ratio as a function of electric power applied to the GNR devices. From a spatial map of the temperature distribution, heat dissipation and transport pathways are investigated. By combining SThM and scanning gate microscopy data from a defected GNR, we observe hot spot formation at well-defined, localized sites.

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Young-Jun Yu, Melinda Y. Han, Stephane Berciaud, Alexandru B. Georgescu, Tony F. Heinz, Louis E. Brus, Kwang S. Kim, Philip Kim. 2011-10-13. High-resolution spatial mapping of the temperature distribution of a Joule self-heated graphene nanoribbon. https://doi.org/10.1063/1.3657515

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