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Phase Diagram Of Adsorbate-Induced Row-Type Alignments

Author

Listed:
  • M. KANG

    (Kansai University of International Studies, Shijimi, Miki 673-0521, Japan)

  • K. YASUTANI

    (Graduate School of Science and Technology, Kobe University Rokkodai, Nada, Kobe 657-8501, Japan)

  • M. KABURAGI

    (Graduate School of Science and Technology, Kobe University Rokkodai, Nada, Kobe 657-8501, Japan;
    Faculty of Cross-Cultural Studies, Kobe University Tsurukabuto, Nada, Kobe 657-8501, Japan)

Abstract

The phase diagram of adsorbate-induced row-type alignments, such as missing-row reconstructions induced by adsorbate atoms on the FCC(110) surface, is calculated by the Blume–Emmery–Griffiths (BEG) model. In the model, we introduce adatom–adatom and dipole–dipole interactions between nearest-neighbor (NN) and next-nearest-neighbor (NNN) rows. The calculation of the temperature versus adatom chemical potential phase diagram is performed using mean-field approximation. It is indicated that when NN and NNN interactions are competitive, there appear either dipole or coverage modulated (incommensurate) phases at high temperatures for a wide regime of the interactions.

Suggested Citation

  • M. Kang & K. Yasutani & M. Kaburagi, 1999. "Phase Diagram Of Adsorbate-Induced Row-Type Alignments," Surface Review and Letters (SRL), World Scientific Publishing Co. Pte. Ltd., vol. 6(05), pages 691-697.
    • Handle: RePEc:wsi:srlxxx:v:06:y:1999:i:05:n:s0218625x99000676
    DOI: 10.1142/S0218625X99000676
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