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|Title:||Hot carrier diffusion in graphene||Authors:||Ruzicka, B.A.
|Issue Date:||8-Nov-2010||Citation:||Ruzicka, B.A., Wang, S., Werake, L.K., Weintrub, B., Loh, K.P., Zhao, H. (2010-11-08). Hot carrier diffusion in graphene. Physical Review B - Condensed Matter and Materials Physics 82 (19) : -. ScholarBank@NUS Repository. https://doi.org/10.1103/PhysRevB.82.195414||Abstract:||We report an optical study of charge transport in graphene. Diffusion of hot carriers in epitaxial graphene and reduced graphene-oxide samples are studied using an ultrafast pump-probe technique with a high spatial resolution. Spatiotemporal dynamics of hot carriers after a pointlike excitation are monitored. Carrier-diffusion coefficients of 11000 and 5500 cm2 s⊃-1 are measured in epitaxial graphene and reduced graphene-oxide samples, respectively, with a carrier temperature on the order of 3600 K. The demonstrated optical techniques can be used for noncontact and noninvasive in situ detection of transport properties of graphene. © 2010 The American Physical Society.||Source Title:||Physical Review B - Condensed Matter and Materials Physics||URI:||http://scholarbank.nus.edu.sg/handle/10635/76322||ISSN:||10980121||DOI:||10.1103/PhysRevB.82.195414|
|Appears in Collections:||Staff Publications|
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