Quantitative low-energy electron diffraction analysis of the GaN(000-1) (11) reconstruction

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F12%3A00385078" target="_blank" >RIV/68378271:_____/12:00385078 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1016/j.susc.2012.01.002" target="_blank" >http://dx.doi.org/10.1016/j.susc.2012.01.002</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.susc.2012.01.002" target="_blank" >10.1016/j.susc.2012.01.002</a>

Result language
angličtina
Original language name
Quantitative low-energy electron diffraction analysis of the GaN(000-1) (11) reconstruction
Original language description
The atomic structure of the GaN(000-1) (11) reconstruction was investigated by quantitative low-energy electron diffraction (LEED). The GaN surface was annealed in an NH3 atmosphere and cooled down without any NH3 flux. LEED patterns with 6-fold symmetrywere measured after annealing. LEED intensity?voltage (I?V) curves were acquired and calculated in the framework of the dynamical theory of electron scattering. Good agreement between the experimental and theoretical curves was achieved for the bare GaN(000-1) (11) surface. Relaxation of the surface atomic layers decreased Pendry's R-factor to 0.21 0.03. The plane relaxations derived from the LEED analysis were found to be in qualitative agreement with ab initio calculations. It was concluded that themeasured LEED I?V curves could be used to determine the bare GaN polarity.
Czech name
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Czech description
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Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
BM - Solid-state physics and magnetism
OECD FORD branch
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Project
<a href="/en/project/GPP204%2F10%2FP028" target="_blank" >GPP204/10/P028: Electron energy losses at solid surfaces</a><br>
Continuities
Z - Vyzkumny zamer (s odkazem do CEZ)

Publication year
2012
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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