Dresden 2026 – wissenschaftliches Programm

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DS: Fachverband Dünne Schichten

DS 21: Optical Analysis of Thin Films

DS 21.6: Vortrag

Freitag, 13. März 2026, 11:00–11:15, REC/C213

Adsorption-Driven Vibrational and Electronic Changes on Cu(110) — •Sarang Bhasme, Mariella Denk, and Peter Zeppenfeld — Johannes Kepler University, Linz, Austria

Surface resonant Raman spectroscopy (SRRS) provides a sensitive approach for probing phonons and electron-phonon interactions on metal surfaces through resonant coupling to the surface electronic states.[1] In this work, SRRS combined with reflectance difference spectroscopy is employed to investigate adsorption induced modifications of the vibrational response of Cu(110) under ultra-high-vacuum conditions. Time-resolved SRRS measurements during controlled CO and Oxygen exposure reveal systematic evolution in phonon-related features, indicating changes in surface electronic structures and scattering pathways as adsorption progresses. These data enable comparative assessment of molecule-specific interactions and adsorption dynamics on the same surface.

[1] M. Denk et al., Phys. Rev. Lett. 128, 216101 (2022).

Keywords: Surface Resonant Raman Spectroscopy; Cu(110); Surface Phonons; Reflective Difference Spectroscopy