Confined Plamons in graphene-graphene heterostructure

ORAL

Abstract

Graphene, a two-dimensional network with honeycomb lattice, attracted great interest in electronics and optics. Surface Plasmon (SP) modes exist in graphene with stronger confinement and lower losses than in noble metals, which makes graphene a great promising material for RF. Response of confined graphene lake structure depends on both the geometry and the properties of underlying substrate. In narrow graphene nanostructure, such as graphene nano-disk, quantum effects become very important, so continuum plasmon modes are transformed into a discrete set of levels, quantized in angular and radial directions. Moreover, when combined with other materials, graphene SP exhibits hybridization, for example, with surface phonon polaritons, providing additional flexibility for fine tuning of composite plasmons. In our work, we investigate surface plasmon hybridization between small and an infinite monolayer graphene. We also consider the case of angular mismatched lattice of the disk and the monolayer. For this we introduce a scalar field of a moire pattern may induce periodic modulation in charge density and therefore in conductivity. We observe plasmon coupling between modes with different angular quantum numbers.

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Authors

  • Dan You

    Lehigh Univ

  • Shahab Derakhshan

    Drexel University, Univ of Delaware, Princeton University, Naval Surface Warfare Center\Carderock Division\West Bethesda site, Naval Surface Warfare Center and Georgetown Univ., Dept. of Physics and Astronomy, University of Delaware, Dept. of Physics and Astronomy, University of Deleware, Dept. of Physics and Astronomy, University of Nevada-Reno, university of Delaware, Contributors, Department of Physics, Astronomy and Geosciences, Towson University, Choice Research Group, Univ of the Sciences in Philadephia, Rutgers Univ, National Institute of Standards and Technology, Department of Chemistry, West Chester University, West Chester, PA 19383, Bucknell University, Towson University, University of Maryland, College of William and Mary, Naval Research Laboratory, Department of Physics, Villanova University, Department of Chemistry, Faculty of Medicine, University of Brescia, Department of Chemistry, State University of New York at Potsdam, Delaware State University DE, NIH Bethesda MD, Wilmington Friends School DE, University Of Rochester NY, Delaware State University, Department of Physics and Astronomy,West Virginia University, The National Energy Technology Laboratory, Non-tenure track professor at research institution, Government Sponsored Laboratory, Research and Development at Industrial Company, Tenure-track Professor at 4 yr college, Department of Physics and Astronomy and Department of Chemistry and Biochemistry, University of Delaware, Biology and Soft Matter Division, Oak Ridge National Laboratory, and Department of Physics and Astronomy, The University of Tennessee, Biology and Soft Matter Division, Oak Ridge National Laboratory, Lehigh Univ, Johns Hopkins Univ, NIST, GMU, GWU, Lock Haven University of PA, Univ of Maryland-Balt County; Center for Nanoscale Materials, Argonne National Laboratory, Department of Chemistry, Northwestern University, Univ of Maryland-Balt County, Pennsylvania State University, BAE Systems, Inc., Nashua, New Hampshire 03061, Department of Physics, West Virginia University, Morgantown, West Virginia, 26506-6315, California State University, Long Beach