Bulletin of the American Physical Society
APS March Meeting 2012
Volume 57, Number 1
Monday–Friday, February 27–March 2 2012; Boston, Massachusetts
Session D18: Focus Session: Nanostructures and Metamaterials, Growth, Structure, and Characterization -- What is a good conductor for Metamaterials and Plasmonics
2:30 PM–5:30 PM,
Monday, February 27, 2012
Sponsoring Unit: DMP
Chair: Costas Soukoulis, Ames Lab/Iowa State University
Abstract ID: BAPS.2012.MAR.D18.2
Abstract: D18.00002 : Graphene, superconductors, and metals: What is a good conductor for metamaterials and plasmonics?*
3:06 PM–3:42 PM
Preview Abstract Abstract
(Vrije Univ. Brussel and Ames Lab/Iowa State Univ.)
Recent developments in the field of metamaterials and plasmonics have promised a number of exciting applications, in particular at terahertz and optical frequencies. Most metamaterials consist of carefully designed metallic structures that replace atoms in their role as the basic unit of interaction with electromagnetic radiation. Unfortunately, the noble metals are not particularly good conductors at optical frequencies, resulting in significant dissipative loss in metamaterials. In this communication, we address the question of what is a good conductor for use in metamaterials and in plasmonics. We develop a model based on the quasistatic response of the metamaterial constituents to an incident electromagnetic field in order to derive a figure of merit for conductors. We find (1) it is the resistivity of the material-rather than the conductivity or permittivity-that provides direct information on the dissipative loss in the metamaterial, and (2) the dissipative loss depends on certain geometric aspects of the system, such as the layer thickness. Subsequently, we apply the model to graphene, to superconductors (Nb and YBCO), to several noble and transition metals, and to some conducting oxides (like ITO).
*Co-authors of this work are Thomas Koschny, Maria Kafesaki, and Costas M. Soukoulis. This work was supported by Ames Laboratory (U.S. DOE), the U.S. ONR (Award No. N000141010925), and the E.U. project NIMNIL (Grant. No. 228637).
To cite this abstract, use the following reference: http://meetings.aps.org/link/BAPS.2012.MAR.D18.2
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