Chemical imaging of InGaAs/InAlAs quantum wells

Mountjoy, G. and Crozier, P.A. and Fejes, P.L. and Tsui, R.K. and Kramer, G.D. (1997) Chemical imaging of InGaAs/InAlAs quantum wells. In: ARRAY(0x7f8a032306c8), Warrendale, PA, United States, Boston, MA, USA. (The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided)

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Abstract

We have applied high resolution chemical imaging in a transmission electron microscope to study compositional variations across InGaAs/InAlAs double quantum well structures. The structures of interest are grown on an InP substrate and consist of two 40 angstroms layers of InGaAs separated by 20 angstroms of InAlAs. For this (InGa)x(InAl)1-xAs system, we have been able to obtain compositional information with an accuracy of about 20% and a maximum spatial resolution of 1/2Ã?1/2 unit cell. The results clearly show irregularities on a monatomic scale.

Item Type: Conference or workshop item (Paper)
Additional information: Unmapped bibliographic data: LA - English [Field not mapped to EPrints] J2 - Mater Res Soc Symp Proc [Field not mapped to EPrints] AD - Arizona State Univ, Tempe, United States [Field not mapped to EPrints] DB - Scopus [Field not mapped to EPrints] A4 - MRS [Field not mapped to EPrints] C3 - Materials Research Society Symposium - Proceedings [Field not mapped to EPrints]
Uncontrolled keywords: Composition, Imaging techniques, Semiconducting aluminum compounds, Semiconducting gallium arsenide, Semiconducting indium phosphide, Semiconductor device structures, Substrates, Transmission electron microscopy, Chemical imaging, Semiconductor quantum wells
Subjects: Q Science > QC Physics > QC176 Solid state physics
Q Science > QC Physics
Divisions: Faculties > Sciences > School of Physical Sciences > Functional Materials Group
Depositing User: Giles Tarver
Date Deposited: 16 Jan 2015 16:12 UTC
Last Modified: 27 Feb 2015 10:22 UTC
Resource URI: https://kar.kent.ac.uk/id/eprint/46736 (The current URI for this page, for reference purposes)
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