IDEAS home Printed from https://ideas.repec.org/a/eee/phsmap/v167y1990i1p28-42.html
   My bibliography  Save this article

Scattering theory and conductance fluctuations in mesoscopic systems

Author

Listed:
  • Weidenmüller, Hans A.

Abstract

A random-matrix model developed originally in the framework of the statistical theory of nuclear reactions is (via the many-channel approximation of Landauer's formula) applied to universal conductance fluctuations (UCF) in a disordered sample connected to two or three leads. The leads are modelled as ideal conductors. For large sample lengths, the results agree with those obtained by other approaches. This shows that UCF can be modelled successfully in terms of random matrices. For sample lengths of several tens of elastic mean free paths, the conductance fluctuations are seen to depend sensitively on the coupling to the leads. This is due to the appearance of a new energy scale, the width Γ for emission of an electron from the disordered sample into the leads. This quantity Γ also influences the autocorrelation function of the conductance. Results are presented for the three canonical random-matrix ensembles: The Gaussian orthogonal, unitary, and symplectic ensembles.

Suggested Citation

  • Weidenmüller, Hans A., 1990. "Scattering theory and conductance fluctuations in mesoscopic systems," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 167(1), pages 28-42.
    • Handle: RePEc:eee:phsmap:v:167:y:1990:i:1:p:28-42
    DOI: 10.1016/0378-4371(90)90042-Q
    as

    Download full text from publisher

    File URL: http://www.sciencedirect.com/science/article/pii/037843719090042Q
    Download Restriction: Full text for ScienceDirect subscribers only. Journal offers the option of making the article available online on Science direct for a fee of $3,000
    File URL: https://libkey.io/10.1016/0378-4371(90)90042-Q?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:eee:phsmap:v:167:y:1990:i:1:p:28-42. 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: Catherine Liu (email available below). General contact details of provider: http://www.journals.elsevier.com/physica-a-statistical-mechpplications/ .

    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.