Results 311 to 320 of about 192,004 (363)

COMPUTATIONAL THEORY OF REFLECTION HIGH ENERGY ELECTRON DIFFRACTION

Surface Review and Letters, 1997
The theory of reflection high energy electron diffraction (RHEED) by crystal surfaces is reviewed, with special emphasis on computational techniques. Multiple scattering is accounted for by solving the Schrödinger equation exactly to obtain the amplitudes of the diffracted beams above the surface.
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Reflection high-energy electron diffraction from stepped surfaces

Physics Letters A, 1979
Abstract Recent experimental results on the diffraction of high-energy electrons from vicinal surfaces have been shown to be most useful in evaluating surface geometries. A computational study of a stepped metal surface is presented and the results are discussed.
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A differential reflection high energy electron diffraction measurement system

Review of Scientific Instruments, 1991
An economical, real-time differential reflection high energy electron diffraction (RHEED) measurement system which is effective in a high-noise environment is described. Two fiber optic cables sample the RHEED intensities from the phosphorescent screen in a molecular beam epitaxy (MBE) growth chamber.
C. E. Chang, T. P. Chin, C. W. Tu
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Surface pole figures by reflection high-energy electron diffraction

Applied Physics Letters, 2006
The authors demonstrated that it is possible to construct a reflection high-energy electron diffraction (RHEED) pole figure of a polycrystalline film by recording multiple RHEED patterns as they rotate the substrate around the surface normal. Since electrons have limited penetration depth, the pole figure constructed is a surface pole figure.
F. Tang, G.-C. Wang, T.-M. Lu
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Plasmon emission by electrons in reflection high energy electron diffraction

Surface Science, 2004
The theory of plasmon emission by fast electrons moving into or reflected from a dielectric is extended to the case where both the electron and the plasmons are treated quantum mechanically. This is necessary to allow consideration of experiments where the electron is diffracted, as is particularly the case for reflection high energy electron ...
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Surface Studies by Low-Energy Electron Diffraction and Reflection High-Energy-Electron Diffraction

2012
In this chapter, we present the basic concepts of the low-energy electron diffraction (LEED) and reflection high-energy electron diffraction (RHEED) experiments. The main goal is to provide an overview of the exploitation of these instrumental methods for analyzing the surfaces of technologically important III–V compound semiconductors.
Laukkanen, P., Sadowski, J., Guina, M.
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Coherent surface bremsstrahlung in low-energy-electron diffraction and reflection-high-energy-electron diffraction

Physical Review B, 1974
The classical theory of transition radiation generated when charged particles travel through a dielectric-vacuum interface is reconsidered in order to include the effects of the diffraction of the particle beam occurring at the surface. If the surface is atomically smooth, coherent Bragg reflection and transmission occur as well as specular reflection ...
Tomaš, Marin-Slobodan, Lucas, Amand A., Šunjić, Marijan, Juretić, Davor   +3 more
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The effect of surface roughness on reflection high-energy electron diffraction rocking curves and impact on reflection high-energy electron diffraction intensity oscillations

Journal of Vacuum Science & Technology A: Vacuum, Surfaces, and Films, 1990
Reflection high-energy electron diffraction (RHEED) rocking curves have been studied for the Si(111)-((3)1/2×(3)1/2) R30°–Ag structure as a function of varying degrees of surface roughness as generated by Ar+ ion bombardment. Under increased surface roughness, most peaks in the rocking curves showed a characteristic change represented by splitting ...
W. C. Fan, A. Ignatiev
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Instrument response of reflection high energy electron diffraction pole figure

Applied Surface Science, 2014
Abstract Reflection high-energy electron diffraction (RHEED) pole figure technique using the transmission mode has been developed to study the texture evolution of thin films. For quantitative evaluation of thin film texture, including the dispersion of texture, one would require the knowledge of the instrument response function.
L. Chen, J. Dash, P. Su, C.F. Lin, I. Bhat, T.-M. Lu, G.-C. Wang   +6 more
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An Introduction to Reflection High Energy Electron Diffraction

1988
Reflection high energy electron diffraction (RHEED) uses electrons of energy from a few keV to ∼100 keV directed at low angles of incidence (0.01 to 0.1 rad) with respect to a surface. RHEED is a fairly old technique. There are several examples1,2 of its use in the 1930’s and it was extensively employed for corrosion studies and epitaxial growth in the
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