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

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 a...

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Bibliographic Details
Published inarXiv.org
Main Authors Bermúdez-Perez, Jose D, Herrera-Vasco, Edwin, Casas-Salgado, Javier, Castelblanco, Hector A, Vega-Bustos, Karen, Cardenas-Chirivi, Gabriel, Herrera-Sandoval, Oscar L, Suderow, Hermann, Giraldo-Gallo, Paula, Galvis, Jose A
Format Paper
LanguageEnglish
Published Ithaca Cornell University Library, arXiv.org 04.08.2023
Subjects
Acoustic noise
Electronic control
Electronic structure
High resolution
Pyrolytic graphite
Scanning tunneling microscopy
Thermoelectricity
Two dimensional materials
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Summary: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.
ISSN:2331-8422