While the As-rich 2 x 4 reconstruction of GaAs(001) is well explained by the so-called beta(2) structure, the atomic structure of the Ga-rich 4 x 2 phase has been discussed for a long time. In this review, the most important structural models for the GaAs(001) (4 x 2)/c(8 x 2) surface are compared from different theoretical and experimental points of view. The selected reconstructions include the recently proposed model, a new mixed dimer model, and the well-known beta, beta(2), Cerda and Skala zeta 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 zeta model satisfies all criteria, and provides therefore a satisfactory explanation of the atomic structure of GaAs(001)-(4 x 2).

Paget, D., Pulci, O., Sauvage, M., Garreau, Y., Reining, L., Chiaradia, P., et al. (2002). Do we understand the structure of the gallium-rich surface of GaAs(001)? Experimental and theoretical approaches. SURFACE REVIEW AND LETTERS, 9(3-4), 1497-1510 [10.1142/S0218625X02003858].

Do we understand the structure of the gallium-rich surface of GaAs(001)? Experimental and theoretical approaches

PULCI, OLIVIA;CHIARADIA, PIETRO;
2002-01-01

Abstract

While the As-rich 2 x 4 reconstruction of GaAs(001) is well explained by the so-called beta(2) structure, the atomic structure of the Ga-rich 4 x 2 phase has been discussed for a long time. In this review, the most important structural models for the GaAs(001) (4 x 2)/c(8 x 2) surface are compared from different theoretical and experimental points of view. The selected reconstructions include the recently proposed model, a new mixed dimer model, and the well-known beta, beta(2), Cerda and Skala zeta 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 zeta model satisfies all criteria, and provides therefore a satisfactory explanation of the atomic structure of GaAs(001)-(4 x 2).
2002
Pubblicato
Rilevanza internazionale
Articolo
Esperti anonimi
Settore FIS/03 - FISICA DELLA MATERIA
English
Con Impact Factor ISI
Paget, D., Pulci, O., Sauvage, M., Garreau, Y., Reining, L., Chiaradia, P., et al. (2002). Do we understand the structure of the gallium-rich surface of GaAs(001)? Experimental and theoretical approaches. SURFACE REVIEW AND LETTERS, 9(3-4), 1497-1510 [10.1142/S0218625X02003858].
Paget, D; Pulci, O; Sauvage, M; Garreau, Y; Reining, L; Chiaradia, P; Bechstedt, F; Pinchaux, R
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2108/104756
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