Atom-resolved scanning tunneling microscopy of (In,Ga)As quantum wires on GaAs(311)A
Identifieur interne : 00A718 ( Main/Repository ); précédent : 00A717; suivant : 00A719Atom-resolved scanning tunneling microscopy of (In,Ga)As quantum wires on GaAs(311)A
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Abstract
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.
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<front><div type="abstract" xml:lang="en">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.</div>
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