The parabolas and circles in RHEED patterns

Nan Yao; J. M. Cowley

doi:10.1016/0304-3991(89)90046-6

The parabolas and circles in RHEED patterns

Nan Yao, J. M. Cowley

Research output: Contribution to journal › Article › peer-review

15 Scopus citations

Abstract

The continuous circles and parabolas which occur in Kikuchi line arrays in RHEED patterns have been interpreted as arising from surface resonance channelling effects. Similar circles and parabolas have also been observed in transmission patterns and may be attributed to channeling along rows of planes of atoms in the bulk crystal. We have made further observations on InP (110), GaAs (110) and Pt (111) surfaces and comparisons of the circles and parabolas, obtained in reflection and transmission as a function of incident beam direction. Differences observed in intensity and position of these features may represent the difference between bulk and surface channelling phenomena. Observations have also been made on the temperature dependence of the Kikuchi line features.

Original language	English (US)
Pages (from-to)	149-157
Number of pages	9
Journal	Ultramicroscopy
Volume	31
Issue number	1
DOIs	https://doi.org/10.1016/0304-3991(89)90046-6
State	Published - Sep 1989
Externally published	Yes

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Atomic and Molecular Physics, and Optics
Instrumentation

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10.1016/0304-3991(89)90046-6

Cite this

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title = "The parabolas and circles in RHEED patterns",

abstract = "The continuous circles and parabolas which occur in Kikuchi line arrays in RHEED patterns have been interpreted as arising from surface resonance channelling effects. Similar circles and parabolas have also been observed in transmission patterns and may be attributed to channeling along rows of planes of atoms in the bulk crystal. We have made further observations on InP (110), GaAs (110) and Pt (111) surfaces and comparisons of the circles and parabolas, obtained in reflection and transmission as a function of incident beam direction. Differences observed in intensity and position of these features may represent the difference between bulk and surface channelling phenomena. Observations have also been made on the temperature dependence of the Kikuchi line features.",

author = "Nan Yao and Cowley, {J. M.}",

note = "Funding Information: The authorsa re grateful to Dr. J.A. Venables for some helpful comments.T his work was supported by ONR grant N00014-86-K-0319(M APS program) and made use of the ASU Facility for HREM supportedb y NSF grant DMR 8611609.",

year = "1989",

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doi = "10.1016/0304-3991(89)90046-6",

language = "English (US)",

volume = "31",

pages = "149--157",

journal = "Ultramicroscopy",

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T1 - The parabolas and circles in RHEED patterns

AU - Yao, Nan

AU - Cowley, J. M.

N1 - Funding Information: The authorsa re grateful to Dr. J.A. Venables for some helpful comments.T his work was supported by ONR grant N00014-86-K-0319(M APS program) and made use of the ASU Facility for HREM supportedb y NSF grant DMR 8611609.

PY - 1989/9

Y1 - 1989/9

N2 - The continuous circles and parabolas which occur in Kikuchi line arrays in RHEED patterns have been interpreted as arising from surface resonance channelling effects. Similar circles and parabolas have also been observed in transmission patterns and may be attributed to channeling along rows of planes of atoms in the bulk crystal. We have made further observations on InP (110), GaAs (110) and Pt (111) surfaces and comparisons of the circles and parabolas, obtained in reflection and transmission as a function of incident beam direction. Differences observed in intensity and position of these features may represent the difference between bulk and surface channelling phenomena. Observations have also been made on the temperature dependence of the Kikuchi line features.

AB - The continuous circles and parabolas which occur in Kikuchi line arrays in RHEED patterns have been interpreted as arising from surface resonance channelling effects. Similar circles and parabolas have also been observed in transmission patterns and may be attributed to channeling along rows of planes of atoms in the bulk crystal. We have made further observations on InP (110), GaAs (110) and Pt (111) surfaces and comparisons of the circles and parabolas, obtained in reflection and transmission as a function of incident beam direction. Differences observed in intensity and position of these features may represent the difference between bulk and surface channelling phenomena. Observations have also been made on the temperature dependence of the Kikuchi line features.

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EP - 157

JO - Ultramicroscopy

JF - Ultramicroscopy

IS - 1

ER -

The parabolas and circles in RHEED patterns

Abstract

All Science Journal Classification (ASJC) codes

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