Atomic Scale Light-Matter Interaction

We investigate atomic-scale structures, such as adsorbates or defects, and how these structures interact with each other. Using high-resolution scanning tunneling microscopy (STM) and atomic force microscopy (AFM) - techniques that routinely achieve atomic resolution - we can probe these structures and their properties with unprecedented precision.
By combining these methods with optical spectroscopy, we surpass the diffraction limit, reaching sub-nanometer spatial resolution in experiments like STM-induced electroluminescence (STML) and tip-enhanced photoluminescence (TEPL).
Additionally, we are advancing these techniques towards high temporal resolution, allowing us to observe dynamic processes - such as electron movement, excited state formation and decay, and energy transfer - in nanostructures, in real space and real time.

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