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arXiv · 2305.03418

High-Resolution Scanning Tunneling Microscope and its Adaptation for Local Thermopower Measurements in 2D Materials

Jose D. Bermúdez-Perez·Edwin Herrera-Vasco·Javier Casas-Salgado·Hector A. Castelblanco·Karen Vega-Bustos·Gabriel Cardenas-Chirivi·Oscar L. Herrera-Sandoval·Hermann Suderow·Paula Giraldo-Gallo·Jose A. Galvis
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Abstract

We present the design, fabrication and discuss the performance of a new combined high-resolution Scanning Tunneling and thermopower Microscope (STM/SThEM). We also describe the development of the electronic control, the user interface, the vacuum system, and arrangements to reduce acoustical noise and vibrations. We demonstrate the microscope performance with atomic-resolution topographic images of Highly oriented pyrolytic graphite (HOPG) and local thermopower measurements in the semimetal Bi2Te3 sample. Our system offers a tool to investigate the relationship between electronic structure and thermoelectric properties at the nanoscale.

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Jose D. Bermúdez-Perez, Edwin Herrera-Vasco, Javier Casas-Salgado, Hector A. Castelblanco, Karen Vega-Bustos, Gabriel Cardenas-Chirivi, Oscar L. Herrera-Sandoval, Hermann Suderow, Paula Giraldo-Gallo, Jose A. Galvis. 2023-05-05. High-Resolution Scanning Tunneling Microscope and its Adaptation for Local Thermopower Measurements in 2D Materials. https://arxiv.org/abs/2305.03418

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