• DocumentCode
    1192495
  • Title

    Tetrahedral magnetic cluster embedded in metallic matrix: electron-correlation effects

  • Author

    Cruz-Silva, E. ; Lopez-Urias, F. ; Munoz-Sandoval, E. ; Terrones, M.

  • Author_Institution
    Adv. Mater. Dept., IPICyT, San Luis Potosi, Mexico
  • Volume
    41
  • Issue
    10
  • fYear
    2005
  • Firstpage
    3428
  • Lastpage
    3430
  • Abstract
    A tetrahedral magnetic cluster surrounded by metallic atoms is studied in the framework of the Hubbard model. The ground-state energy and the wave function are obtained exactly using the Lanczos numerical diagonalization method. The spin/spin correlation functions γij=i·S&oarr;j> and the total spin S are analyzed as a function of the ratio between the on-site Coulomb repulsion U and electronic hopping t.
  • Keywords
    Hubbard model; electron correlations; ferromagnetism; Coulomb repulsion; Hubbard model; Lanczos numerical diagonalization; electron correlation effects; ground state energy; metallic matrix; tetrahedral magnetic cluster; wave function; Antiferromagnetic materials; Coatings; Eigenvalues and eigenfunctions; Electrons; Giant magnetoresistance; Inorganic materials; Magnetic analysis; Magnetic materials; Magnetic moments; Wave functions; Clusters; Hubbard Model; electronic correlation; magnetism;
  • fLanguage
    English
  • Journal_Title
    Magnetics, IEEE Transactions on
  • Publisher
    ieee
  • ISSN
    0018-9464
  • Type

    jour

  • DOI
    10.1109/TMAG.2005.855218
  • Filename
    1519328
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=1192495