Speaker: Aleksandr Rodin
Abstract Details: Graphene plasmonics is a rapidly developing field of study. In this talk, I will discuss what makes graphene such an attractive material for plasmons. Following this, I will show and describe experimental results of real-space plasmon imaging using near- field microscopy. I will focus on two types of geometries: half-planes and triangular flakes. Theoretical basis to describe the results will be provided. Finally, I will talk about the effect that grain boudaries and line defects have on plasmons. A. S. Rodin, Z. Fei, A. S. McLeod, M. Wagner, A. H. Castro Neto, M. M. Fogler, D. N. Basov, Plasmonic hot spots in triangular tapered graphene microcrystals', accepted to Phys. Rev. B (2013) Z. Fei, A. S. Rodin, W. Gannett, S. Dai, W. Regan, M. Wagner, M. K. Kiu, A. S. McLeod, G. Dominguez, M.Thiemens, M. M. Fogler, A. H. Castro-Neto, F. Keilmann, A. Zettl, R. Hillenbrand, M. M. Fogler, D. N. Basov, Electronic and plasmonic phenomena at grain boundaries in chemical vapor deposited graphene', Nature Nanotech. 8, 821-825 (2013) Z. Fei, A. S. Rodin, G. O. Andreev, W. Bao, A. S. McLeod, M. Wagner, L. M. Zhang, Z. Zhao, M. Thiemens, G. Dominguez, M. M. Fogler, A. H. Castro Neto, C. N. Lau, F. Keilmann, D. N. Basov, 'Gate-tuning of graphene plasmons revealed by infrared nano-imaging', Nature 487, 82-85 (2012).Click HERE for directions

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