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Confinement in self-assembled InAs/InP quantum wires studied by magneto-photoluminescence

Maes, J and Hayne, M and Gonzalez, Y and Gonzalez, L and Fuster, D and Garcia, J M and Moshchalkov, V V (2004) Confinement in self-assembled InAs/InP quantum wires studied by magneto-photoluminescence. Physica E: Low-dimensional Systems and Nanostructures, 21 (2-4). pp. 261-264. ISSN 1386-9477

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Abstract

We studied two InAs/InP quantum wire samples with different growth conditions. The photoluminescence of the first sample reveals up to six distinct peaks, while the second has only two pronounced photoluminescence peaks that are attributed to flat wires with heights that differ by exactly one monolayer. Despite the large band offsets in this system, the photoluminescence energy shift of these peaks with a magnetic field applied in the plane of the wires shows that the extent of the exciton wave function in the growth direction is much larger than the wire height, i.e. the wave function spills over into the InP. Moreover, the exciton wave function shrinks for increasing wire height. The wave function spill-over is qualitatively confirmed in the first quantum wire sample. (C) 2003 Elsevier B.V. All rights reserved.

Item Type: Article
Journal or Publication Title: Physica E: Low-dimensional Systems and Nanostructures
Uncontrolled Keywords: self-assembled quantum wires ; InAs ; pulsed magnetic fields
Subjects: UNSPECIFIED
Departments: Faculty of Science and Technology > Physics
ID Code: 49489
Deposited By: ep_importer_pure
Deposited On: 12 Aug 2011 09:10
Refereed?: Yes
Published?: Published
Last Modified: 26 Jul 2012 19:28
Identification Number:
URI: http://eprints.lancs.ac.uk/id/eprint/49489

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