Publications at the Institute of Physics

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Brand, Jonathan; Néel, Nicolas; Kröger, Jörg;
Probing relaxations of atomic-scale junctions in the Pauli repulsion range. - In: DPG-Frühjahrstagung (DPG Spring Meeting) of the Condensed Matter Section (SKM) together with the DPG Division Environmental Physics and the Working Groups Accelerator Physics; Equal Opportunities; Energy; Industry and Business; Physics, Modern IT and Artificial Intelligence, Young DPG, (2020), O 28.2

Néel, Nicolas; Bohn, Markus; Kröger, Jörg; Schüler, Malte; Shao, Bin; Wehling, Tim O.; Kowalski, Alexander; Sangiovanni, Giorgio;
Single-Co and two-site Kondo effect in atomic Cu wires on Cu(111). - In: DPG-Frühjahrstagung (DPG Spring Meeting) of the Condensed Matter Section (SKM) together with the DPG Division Environmental Physics and the Working Groups Accelerator Physics; Equal Opportunities; Energy; Industry and Business; Physics, Modern IT and Artificial Intelligence, Young DPG, (2020), O 30.3

Yi, Juemin; Wang, Dong; Zhong, Jinhui; Schaaf, Peter; Runge, Erich; Lienau, Christoph;
Fluctuation-modulated third harmonic deep ultraviolet emission from randomly disordered Si nanograss. - In: DPG-Frühjahrstagung (DPG Spring Meeting) of the Condensed Matter Section (SKM) together with the DPG Division Environmental Physics and the Working Groups Accelerator Physics; Equal Opportunities; Energy; Industry and Business; Physics, Modern IT and Artificial Intelligence, Young DPG, (2020), O 18.10

Zhong, Jin-Hui; Vogelsang, Jan; Yi, Jue-Min; Wang, Dong; Wittenbecher, Lukas; Mikaelsson, Sara; Korte, Anke; Chimeh, Abbas; Arnold, Cord L.; Schaaf, Peter; Runge, Erich; L'Huillier, Anne; Mikkelsen, Anders; Lienau, Christoph;
Nonlinear plasmon-exciton coupling enhances sum-frequency generation from a Au/ZnO nanohybrid. - In: DPG-Frühjahrstagung (DPG Spring Meeting) of the Condensed Matter Section (SKM) together with the DPG Division Environmental Physics and the Working Groups Accelerator Physics; Equal Opportunities; Energy; Industry and Business; Physics, Modern IT and Artificial Intelligence, Young DPG, (2020), O 18.9

Heyder, Florian; Schumacher, Jörg; Hentschel, Martina;
Moist Rayleigh-Bérnard Convection in conditionally unstable environments. - In: DPG-Frühjahrstagung (DPG Spring Meeting) of the Condensed Matter Section (SKM) together with the DPG Division Environmental Physics and the Working Groups Accelerator Physics; Equal Opportunities; Energy; Industry and Business; Physics, Modern IT and Artificial Intelligence, Young DPG, (2020), DY 16.3

Behrens, Arne; Bosch, Martí; Feßer, Patrick; Hentschel, Martina; Sinzinger, Stefan;
Fabrication and characterization of deformed microdisk cavities in silicon dioxide with high Q-factor. - In: Applied optics, ISSN 2155-3165, Bd. 59 (2020), 26, S. 7893-7899

We demonstrate the excitation and characterization of whispering gallery modes in a deformed optical microcavity. To fabricate deformed microdisk microresonators we established a fabrication process relying on dry plasma etching tools for many degrees of freedom and a shape-accurate morphology. This approach allowed us to fabricate resonators of different sizes with a controlled sidewall angle and underetching in large quantities with reproducible properties such as a surface roughness RQ ≤ 2nm. The excitation and characterization of these modes were achieved by using a state-of-the-art tapered fiber coupling setup with a narrow linewidth tunable laser source. The conducted measurements in shortegg resonators showed at least two modes within a spectral range of about 237 pm. The highest Q-factors measured were in the range of 105. Wave optical eigenmode and frequency domain simulations were conducted that could partially reproduce the observed behavior and therefore allow us to compare the experimental results.



https://doi.org/10.1364/AO.398108
Kürth, Sascha; Schmidt-Grund, Rüdiger; Krischok, Stefan; Tonisch, Katja;
Structure and dielectric function tensor of (Al,Sc)N thin films. - In: DPG-Frühjahrstagung (DPG Spring Meeting) of the Condensed Matter Section (SKM) together with the DPG Division Environmental Physics and the Working Groups Accelerator Physics; Equal Opportunities; Energy; Industry and Business; Physics, Modern IT and Artificial Intelligence, Young DPG, (2020), HL 30.29

Beenken, Wichard J. D.; Gäbler, Tobias B.; Runge, Erich; Krischok, Stefan;
Improved numerical reconstruction method for Metastable Induced Electron Spectra of molecules. - In: DPG-Frühjahrstagung (DPG Spring Meeting) of the Condensed Matter Section (SKM) together with the DPG Division Environmental Physics and the Working Groups Accelerator Physics; Equal Opportunities; Energy; Industry and Business; Physics, Modern IT and Artificial Intelligence, Young DPG, (2020), O 48.6

Kim, Jaewon; Ryu, Jung-Wan;
Splitting and combining of exceptional points. - In: DPG-Frühjahrstagung (DPG Spring Meeting) of the Condensed Matter Section (SKM) together with the DPG Division Environmental Physics and the Working Groups Accelerator Physics; Equal Opportunities; Energy; Industry and Business; Physics, Modern IT and Artificial Intelligence, Young DPG, (2020), KFM 7.5

Bosch, Martí; Malzard, Simon; Hentschel, Martina; Schomerus, Henning;
Nonhermitian defect states from lifetime differences. - In: DPG-Frühjahrstagung (DPG Spring Meeting) of the Condensed Matter Section (SKM) together with the DPG Division Environmental Physics and the Working Groups Accelerator Physics; Equal Opportunities; Energy; Industry and Business; Physics, Modern IT and Artificial Intelligence, Young DPG, (2020), KFM 7.4