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Berlin 2024 – wissenschaftliches Programm

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O: Fachverband Oberflächenphysik

O 15: Organic Molecules on Inorganic Substrates II: Electronic, Optical and other Properties

O 15.3: Vortrag

Montag, 18. März 2024, 15:30–15:45, MA 043

Interaction between polyatomic molecules on layered surfaces beyond the dipole approximation — •Hsiao-Han Chuang, Ulf Saalmann, and Alexander Eisfeld — Max Planck Institute for the Physics of Complex Systems, Nöthnitzer Str 38, Dresden

For aggregates of molecular monomers above layered surfaces, the dipole approximation breaks down when the distance between monomers and surfaces is less than several nanometers. To overcome this problem, we employ macroscopic quantum electrodynamics and use the complete transition current density of the individual monomers. Within this framework, the resulting Master Equation for the excitonic degrees of freedom of the aggregate is derived. For example, we discuss the case of PTCDA on a KCL surface.

Keywords: macroscopic QED; Master equation; aggregate; open quantum system; system-bath interaction

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