Berlin 2008 – wissenschaftliches Programm
Bereiche | Tage | Auswahl | Suche | Downloads | Hilfe
HL: Fachverband Halbleiterphysik
HL 22: Hybrid systems
HL 22.2: Vortrag
Dienstag, 26. Februar 2008, 09:45–10:00, EW 201
Electromagnetic Interaction between a Quantum Dot and Metallic Structures in the Optical Sub-wavelength Regime — •Matthias Reichelt1,2, Colm Dineen2, Armis R. Zakharian2, Jerome V. Moloney2, and Stephan W. Koch3 — 1Department Physik, Fakultät für Naturwissenschaften,Universität Paderborn, Warburger Str. 100, D-33098 Paderborn, Germany — 2Department of Mathematics, University of Arizona, Tucson AZ 85721, USA — 3Department of Physics and Material Sciences Center, Philipps University, Renthof 5, D-35032 Marburg, Germany
Recently the investigation of sub-wavelength metallic structures has
been of great interest since surface plasmonic effects generate large
confined electric fields [1]. In this work we study a combined system
of a quadrupole-like bowtie and a quantum dot and present a numerical
approach for calculating the electromagnetic field and the microscopic
material equations simultaneously [2]. As application we compute the
electromagnetic force [3] on the quantum dot under different
excitation conditions. We show that it is possible to confine the dot
laterally in the bowtie gap region (<100nm).
[1] P.J. Schuck et al., Phys. Rev. Lett. 94, 017402 (2005)
[2] M. Reichelt, C. Dineen, S.W. Koch, and J.V. Moloney, submitted
[3] P. Meystre, Atom Optics, Springer (2001)