IDEAS home Printed from https://ideas.repec.org/a/wsi/srlxxx/v09y2002i02ns0218625x02003202.html
   My bibliography  Save this article

Unified Theory On Angle-Resolved Photoemission And Light Absorption Spectra Of Strongly Correlated Electron Systems

Author

Listed:
  • NORIKAZU TOMITA

    (Institute of Materials Structure Science, Oho 1-1, Tsukuba, Ibaraki, 305-0801, Japan)

  • KEIICHIRO NASU

    (Institute of Materials Structure Science, Oho 1-1, Tsukuba, Ibaraki, 305-0801, Japan)

Abstract

Very recently, the angle-resolved photoemission spectrum (ARPES) of[Ni(chxn)2Br]Br2(chxn=1R, 2R-cyclohexanediamine), which is a typical one-dimensional Mott insulator, has been experimentally observed. The experiment has strongly suggested that a one-body gap, which is defined as double the ARPES gap, is much smaller than an optical gap given by the light absorption spectrum (LAS). The apparent difference between these two gaps indicates the breakdown of a mean field description of this strongly correlated electron system. In this paper, we show, by using a quantum Monte Carlo method, that the ARPES and LAS of[Ni(chxn)2Br]Br2are consistently explained within the framework of the one-dimensional extended Hubbard model. It is suggested that the large difference between the one-body and optical gaps is caused by the dynamical Zeeman field induced by the quantum fluctuations.

Suggested Citation

  • Norikazu Tomita & Keiichiro Nasu, 2002. "Unified Theory On Angle-Resolved Photoemission And Light Absorption Spectra Of Strongly Correlated Electron Systems," Surface Review and Letters (SRL), World Scientific Publishing Co. Pte. Ltd., vol. 9(02), pages 1017-1021.
    • Handle: RePEc:wsi:srlxxx:v:09:y:2002:i:02:n:s0218625x02003202
    DOI: 10.1142/S0218625X02003202
    as

    Download full text from publisher

    File URL: http://www.worldscientific.com/doi/abs/10.1142/S0218625X02003202
    Download Restriction: Access to full text is restricted to subscribers
    File URL: https://libkey.io/10.1142/S0218625X02003202?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:wsi:srlxxx:v:09:y:2002:i:02:n:s0218625x02003202. 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: Tai Tone Lim (email available below). General contact details of provider: http://www.worldscinet.com/srl/srl.shtml .

    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.