IDEAS home Printed from https://ideas.repec.org/a/spr/eurphb/v44y2005i4p469-479.html
   My bibliography  Save this article

EPR spectrum via entangled states for an exchange-coupled dimer of single-molecule magnets

Author

Listed:
  • Xu Chang-Tan
  • J.-Q. Liang

Abstract

Multi-high-frequency electron paramagnetic resonance(EPR) spectrum for a supermolecular dimer $\left[ {\rm Mn}_4\right] _2$ of single-molecule magnets recently reported [S. Hill, R.S. Edwards, N. Aliaga-Alcalde and G. Christou (HEAC), Science 302, 1015 (2003)] is studied in terms of the perturbation method in which the high-order corrections to the level splittings of degenerate states are included. It is shown that the corresponding eigenvectors are composed of entangled states of two molecules. The EPR-peak positions are calculated in terms of the eigenstates at various frequencies. From the best fit of theoretical level splittings with the measured values we obtain the anisotropy constant and exchange coupling which are in agreement with the corresponding values of experimental observation. Our study confirms the prediction of HEAC that the two Mn4 units within the dimer are coupled quantum mechanically by the antiferromagnetic exchange interaction and the supermolecular dimer behaviors in analogy with artificially fabricated quantum dots. Copyright EDP Sciences/Società Italiana di Fisica/Springer-Verlag 2005

Suggested Citation

  • Xu Chang-Tan & J.-Q. Liang, 2005. "EPR spectrum via entangled states for an exchange-coupled dimer of single-molecule magnets," The European Physical Journal B: Condensed Matter and Complex Systems, Springer;EDP Sciences, vol. 44(4), pages 469-479, April.
    • Handle: RePEc:spr:eurphb:v:44:y:2005:i:4:p:469-479
    DOI: 10.1140/epjb/e2005-00146-y
    as

    Download full text from publisher

    File URL: http://hdl.handle.net/10.1140/epjb/e2005-00146-y
    Download Restriction: Access to full text is restricted to subscribers.
    File URL: https://libkey.io/10.1140/epjb/e2005-00146-y?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:44:y:2005:i:4:p:469-479. 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.