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Dresden 2020 – wissenschaftliches Programm

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HL: Fachverband Halbleiterphysik

HL 22: 2D Materials and their Heterostructures I (joint session DS/HL/O)

HL 22.5: Vortrag

Dienstag, 17. März 2020, 10:30–10:45, CHE 89

Optical properties of TMDC monolayers interfaced with 2D metals — •Katharina Nisi1, Shruti Subramanian2,3, Florian Sigger1, Margaux Lassaunière4, David O. Tiede4, Hendrik Lambers4, Alexander Holleitner1, Joshua Robinson2,3, and Ursula Wurstbauer41Walter Schottky Institute and Physics Department, Technical University of Munich, Garching, Germany — 2Department of Materials Science and Engineering, The Pennsylvania State University, USA — 3Center for 2-Dimensional and Layered Materials, The Pennsylvania State University, USA — 4Institute of Physics, University of Münster, Münster, Germany

Two-dimensional metals such as 2D-Ga or 2D-In prepared by confinement epitaxy are an emerging class of materials with peculiar properties including superconductivity and strong plasmonic response [1]. The plasmon resonance of those 2D metals spectrally overlaps with the excitonic transition energies of semiconducting transition metal dichalcogenides. Hybrid structures of 2D metals with TMDCs are promising for enhancing the light matter interaction. We investigate the optical response of 2D metal-TMDC hybrid structure by a combination of spectroscopic imaging ellipsometry, photoluminescence and Raman spectroscopy.

[1] B. Bersch et al. arXiv:1905.09938 (2019).

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