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Appl. Phys. Lett. 84, 1756 (2004); http://dx.doi.org/10.1063/1.1664018 (3 pages)

Atom-resolved scanning tunneling microscopy of (In,Ga)As quantum wires on GaAs(311)A

H. Wen, Z. M. Wang, and G. J. Salamo

Physics Department, University of Arkansas, Fayetteville, Arkansas 72701

(Received 2 October 2003; accepted 7 January 2004)

Generally (In,Ga)As strained growth on GaAs surfaces results in zero-dimensional quantum dots. The formation of one-dimensional quantum wires is demonstrated during (In,Ga)As molecular-beam-epitaxial growth on GaAs(311)A at high temperature. The wires are running along the [−233] direction. Atomically resolved scanning tunneling microscopy images reveal that the wires are triangular-shaped in cross section and the two side bonding facets are {11,5,2}. These results are discussed in terms of a mechanism of strain-driven facet formation. © 2004 American Institute of Physics.

© 2004 American Institute of Physics

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KEYWORDS and PACS

PACS

  • 68.37.Ef

    Scanning tunneling microscopy (including chemistry induced with STM)

  • 81.05.Ea

    III-V semiconductors

  • 68.65.La

    Quantum wires (patterned in quantum wells)

  • 68.55.A-

    Nucleation and growth

  • 81.15.Hi

    Molecular, atomic, ion, and chemical beam epitaxy

ARTICLE DATA

PUBLICATION DATA

ISSN

0003-6951 (print)  
1077-3118 (online)

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