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 Augusto Galvis

    Research output: Contribution to JournalResearch Articlepeer-review

    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's performance with atomic-resolution topographic images of highly oriented pyrolytic graphite (HOPG) and local thermopower measurements in the semimetal Bi2Te3. Our system offers a tool to investigate the relationship between electronic structure and thermoelectric properties at the nanoscale.

    Original languageEnglish (US)
    Article number113963
    JournalUltramicroscopy
    Volume261
    DOIs
    StatePublished - Jul 2024

    All Science Journal Classification (ASJC) codes

    • Electronic, Optical and Magnetic Materials
    • Atomic and Molecular Physics, and Optics
    • Instrumentation

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