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Monte Carlo Simulation Of The Critical Properties Of Quasi-Two-Dimensional Quantum Heisenberg Systems

Author

Listed:
  • I.V. ROJDESTVENSKI

    (Department of Physics, University of Western Ontario, London, Ontario, Canada N6A 3K7, Canada)

  • M.G. COTTAM

    (Department of Physics, University of Western Ontario, London, Ontario, Canada N6A 3K7, Canada)

  • I.A. FAVORSKI

    (Faculty of Physics, Leningrad State University, Russia)

  • T. KUZNETSOVA

    (Faculty of Physics, Leningrad State University, Russia)

  • P.N. VORONTSOV-VELYAMINOV

    (Faculty of Physics, Leningrad State University, Russia)

Abstract

The critical properties of spinS=1/2isotropic Heisenberg ferromagnetic ultrathin films are investigated using the Handscomb Monte Carlo technique. We study a simple cubic lattice with nearest neighbor interactions, including the effects of different values for the interlayer and intralayer exchange parameters. The number of monolayers is taken as 1, 2, or 3, and also we examine the effects of dilution in one of the layers. Numerical calculations are presented for the critical behavior of the longitudinal susceptibility and the spin correlation range. The results are interpreted in terms of a two-dimensional type of critical behavior with renormalized (modified) exchange parameters.

Suggested Citation

  • I.V. Rojdestvenski & M.G. Cottam & I.A. Favorski & T. Kuznetsova & P.N. Vorontsov-Velyaminov, 1994. "Monte Carlo Simulation Of The Critical Properties Of Quasi-Two-Dimensional Quantum Heisenberg Systems," Surface Review and Letters (SRL), World Scientific Publishing Co. Pte. Ltd., vol. 1(02n03), pages 239-252.
    • Handle: RePEc:wsi:srlxxx:v:01:y:1994:i:02n03:n:s0218625x94000242
    DOI: 10.1142/S0218625X94000242
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    ; 75.70.Ak; 75.40.Mg; 64.60.Cn;
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