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O: Fachverband Oberflächenphysik

O 83: Poster Session - Plasmonics and Nanooptics: Light-Matter Interaction, Spectroscopy

O 83.14: Poster

Mittwoch, 18. März 2020, 18:15–20:00, P2/EG

Low temperature scanning tunneling microscope light emission. — Liv Hornekaer and •Richard Balog — Aarhus University, Aarhus, Denmark

I will present modifications implemented in a Createc type low temperature scanning tunneling microscope (LT-STM) situated at iNano, Aarhus University, Denmark, expanding the capabilities of the setup towards tip-induced light emission experiments. Here, the light generated by tunneling electrons is collected by optics located nearby the STM head and then spectrally resolved and detected by a high efficiency LN2 cooled detector. The overall light detection system is optimized for the VIS-NIR range (400 nm - 1000 nm). The design and preliminary STM-light emission experiments on an Au(111) substrate and graphene covered SiC (0001) will be presented, demonstrating the full potential of the setup to reveal complex opto-electronic properties of the samples.