IDEAS home Printed from https://ideas.repec.org/a/spr/eurphb/v96y2023i8d10.1140_epjb_s10051-023-00580-5.html
   My bibliography  Save this article

A tutorial on the NEGF method for electron transport in devices and defective materials

Author

Listed:
  • Akansha Thakur

    (Birla Institute of Technology and Science)

  • Niladri Sarkar

    (Birla Institute of Technology and Science)

Abstract

A tutorial on non-equilibrium Green’s function theory and its applications on nanoscale devices is presented. A stepwise tutorial presentation, starting from the concept of Green’s function to its application on nanoscale FETs is presented in this work. The mathematical implementation of the retarded and advanced Green’s function on the device channel is shown in detail. Also, the partitioning of Green’s function into a source Green’s function, a drain Green’s function, and a device channel Green’s function are shown. The construction of the Hamiltonian matrix by applying a non-interacting tight-binding methodology is shown for device channels with rectangular cross sections and line defects. Mathematical expressions for the transmission function and the terminal currents are obtained. Finally, a brief explanation of the concept of scattering contacts and the NEGF mode space extension is presented. This work is useful for understanding the application of Green’s function on nanoscale devices. Graphical abstract

Suggested Citation

  • Akansha Thakur & Niladri Sarkar, 2023. "A tutorial on the NEGF method for electron transport in devices and defective materials," The European Physical Journal B: Condensed Matter and Complex Systems, Springer;EDP Sciences, vol. 96(8), pages 1-16, August.
    • Handle: RePEc:spr:eurphb:v:96:y:2023:i:8:d:10.1140_epjb_s10051-023-00580-5
    DOI: 10.1140/epjb/s10051-023-00580-5
    as

    Download full text from publisher

    File URL: http://link.springer.com/10.1140/epjb/s10051-023-00580-5
    File Function: Abstract
    Download Restriction: Access to the full text of the articles in this series is restricted.
    File URL: https://libkey.io/10.1140/epjb/s10051-023-00580-5?utm_source=ideas
    LibKey link: if access is restricted and if your library uses this service, LibKey will redirect you to where you can use your library subscription to access this item
    ---><---

    As the access to this document is restricted, you may want to search for a different version of it.

    More about this item

    Statistics

    Access and download statistics

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:spr:eurphb:v:96:y:2023:i:8:d:10.1140_epjb_s10051-023-00580-5. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    We have no bibliographic references for this item. You can help adding them by using this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: Sonal Shukla or Springer Nature Abstracting and Indexing (email available below). General contact details of provider: http://www.springer.com .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.