Chemical imaging of InGaAs/InAlAs quantum wells

G. Mountjoy; Peter Crozier; P. L. Fejes; R. K. Tsui; G. D. Kramer

Chemical imaging of InGaAs/InAlAs quantum wells

G. Mountjoy, Peter Crozier, P. L. Fejes, R. K. Tsui, G. D. Kramer

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

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 1/2×1/2 unit cell. The results clearly show irregularities on a monatomic scale.

Original language	English (US)
Title of host publication	Materials Research Society Symposium - Proceedings
Publisher	MRS
Pages	57-62
Number of pages	6
Volume	466
State	Published - 1997
Event	Proceedings of the 1996 MRS Fall Meeting - Boston, MA, USA Duration: Dec 3 1996 → Dec 5 1996

Other

Other	Proceedings of the 1996 MRS Fall Meeting
City	Boston, MA, USA
Period	12/3/96 → 12/5/96

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials

Cite this

@inproceedings{f67bf79103f740e9ba0604c65f3ddc99,

title = "Chemical imaging of InGaAs/InAlAs quantum wells",

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 1/2×1/2 unit cell. The results clearly show irregularities on a monatomic scale. ",

author = "G. Mountjoy and Peter Crozier and Fejes, {P. L.} and Tsui, {R. K.} and Kramer, {G. D.}",

year = "1997",

language = "English (US)",

volume = "466",

pages = "57--62",

booktitle = "Materials Research Society Symposium - Proceedings",

publisher = "MRS",

note = "Proceedings of the 1996 MRS Fall Meeting ; Conference date: 03-12-1996 Through 05-12-1996",

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TY - GEN

T1 - Chemical imaging of InGaAs/InAlAs quantum wells

AU - Mountjoy, G.

AU - Crozier, Peter

AU - Fejes, P. L.

AU - Tsui, R. K.

AU - Kramer, G. D.

PY - 1997

Y1 - 1997

N2 - 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 1/2×1/2 unit cell. The results clearly show irregularities on a monatomic scale.

AB - 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 1/2×1/2 unit cell. The results clearly show irregularities on a monatomic scale.

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UR - http://www.scopus.com/inward/citedby.url?scp=0030685493&partnerID=8YFLogxK

M3 - Conference contribution

AN - SCOPUS:0030685493

VL - 466

SP - 57

EP - 62

BT - Materials Research Society Symposium - Proceedings

PB - MRS

T2 - Proceedings of the 1996 MRS Fall Meeting

Y2 - 3 December 1996 through 5 December 1996

ER -

Chemical imaging of InGaAs/InAlAs quantum wells

Abstract

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ASJC Scopus subject areas

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