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Do WE UNDERSTAND THE STRUCTURE OF THE GALLIUM-RICH SURFACE of GaAs(001)? EXPERIMENTAL AND THEORETICAL APPROACHES

Author

Listed:
  • D. PAGET

    (Laboratoire Physique de la Matière Condensée, École Polytechnique, F-91128 Palaiseau, France)

  • OLIVIA PULCI

    (Institut für Festkörpertheorie und Theoretische Optik, Friedrich-Schiller-Universität, D-07743 Jena, Germany;
    Laboratoire des Solides Irradiés, UMR 7642 CNRS/CEA, École Polytechnique, F-91128 Palaiseau, France;
    Istituto Nazionale per la Fisica della Materia, Dipartimento di Fisica dell'Università di Roma "Tor Vergata," Via della Ricerca Scientifica, I-00133 Roma, Italy)

  • M. SAUVAGE

    (LURE, CNRS-MR-CEA, Bâtiment 209d, Centre Universitaire Paris-Sud, BP34, F 91898 Orsay, France;
    Laboratoire de Minéralogie Cristallographie, Case 115, 4 place Jussieu, 75252 Paris Cedex 05, France)

  • Y. GARREAU

    (LURE, CNRS-MR-CEA, Bâtiment 209d, Centre Universitaire Paris-Sud, BP34, F 91898 Orsay, France)

  • LUCIA REINING

    (Laboratoire des Solides Irradiés, UMR 7642 CNRS/CEA, École Polytechnique, F-91128 Palaiseau, France)

  • P. CHIARADIA

    (Istituto Nazionale per la Fisica della Materia, Dipartimento di Fisica dell'Università di Roma "Tor Vergata," Via della Ricerca Scientifica, I-00133 Roma, Italy)

  • F. BECHSTEDT

    (Institut für Festkörpertheorie und Theoretische Optik, Friedrich-Schiller-Universität, D-07743 Jena, Germany)

  • R. PINCHAUX

    (LURE, CNRS-MR-CEA, Bâtiment 209d, Centre Universitaire Paris-Sud, BP34, F 91898 Orsay, France)

Abstract

While the As-rich 2 × 4 reconstruction of GaAs(001) is well explained by the so-called β2structure, the atomic structure of the Ga-rich 4 × 2 phase has been discussed for a long time. In this review, the most important structural models for the GaAs(001) (4 × 2)/c(8 × 2) surface are compared from different theoretical and experimental points of view. The selected reconstructions include the recently proposed ζ model, a new mixed dimer model, and the well-known β, β2, Cerdà and Skala models. The different structures are compared on the basis of total energy calculations, simulations of STM experimental images and interpretation of X-ray diffraction data. Only the ζ model satisfies all criteria, and provides therefore a satisfactory explanation of the atomic structure of GaAs(001)-(4 × 2).

Suggested Citation

  • D. Paget & Olivia Pulci & M. Sauvage & Y. Garreau & Lucia Reining & P. Chiaradia & F. Bechstedt & R. Pinchaux, 2002. "Do WE UNDERSTAND THE STRUCTURE OF THE GALLIUM-RICH SURFACE of GaAs(001)? EXPERIMENTAL AND THEORETICAL APPROACHES," Surface Review and Letters (SRL), World Scientific Publishing Co. Pte. Ltd., vol. 9(03n04), pages 1497-1510.
    • Handle: RePEc:wsi:srlxxx:v:09:y:2002:i:03n04:n:s0218625x02003858
    DOI: 10.1142/S0218625X02003858
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