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Electron attenuation anisotropy at crystal surfaces from LEED

SYSNO ASEP	0336724
Document Type	J - Journal Article
R&D Document Type	Journal Article
Subsidiary J	Článek ve WOS
Title	Electron attenuation anisotropy at crystal surfaces from LEED
Title	Hloubka tlumeni elektronu v krystalech z LEEDu
Author(s)	Romanyuk, Olexandr (FZU-D)_{RID, ORCID} Bartoš, Igor (FZU-D)_{RID, ORCID}
Number of authors	2
Source Title	Surface Science. - : Elsevier - ISSN 0039-6028 Roč. 603, č. 17 (2009), s. 2789-2792
Number of pages	4 s.
Language	eng - English
Country	NL - Netherlands
Keywords	electron attenuation length, low energy electron diffraction, photoelectron diffraction, electron–solid scattering and transmission, copper ; low energy electron diffraction ; photoelectron diffraction ; electron–solid scattering and transmission ; copper
Subject RIV	BM - Solid Matter Physics ; Magnetism
R&D Projects	GA202/07/0601 GA ČR - Czech Science Foundation (CSF)
	IAA100100628 GA AV ČR - Academy of Sciences of the Czech Republic (AV ČR)
CEZ	AV0Z10100521 - FZU-D (2005-2011)
UT WOS	000270129100020
DOI	10.1016/j.susc.2009.07.024
Annotation	Dynamical theory of electron scattering is used to describe the electron transport in the surface regions of crystals. The angle resolved attenuation length of electrons is derived from the transmitted LEED electron current decay. Electron attenuation length energy dependence and anisotropy in polar angle are found for crystalline Cu(111) for two high symmetry azimuths. Pronounced anisotropy in polar angle distributions of attenuation lengths is found to be in qualitative agreement with the results obtained from the photoelectron diffraction. Comparison with the attenuation lengths obtained from semiclassical simulations for amorphous copper is given. This comparison demonstrates that simple transfers of the smoothly behaving surface sensitivity from amorphous materials oversimplifies the electron attenuation process and can lead to incorrect results in quantitative analyses of crystalline surfaces.
Workplace	Institute of Physics
Contact	Kristina Potocká, potocka@fzu.cz, Tel.: 220 318 579
Year of Publishing	2010

Number of the records: 1