About: Dielectric response functions of the (000-1), (10-13) GaN single crystalline and disordered surfaces studied by reflection electron energy loss spectroscopy

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About: Dielectric response functions of the (000-1), (10-13) GaN single crystalline and disordered surfaces studied by reflection electron energy loss spectroscopy Goto Sponge NotDistinct Permalink

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	Polar GaN(000-1) (1x1), semipolar GaN(10-13) surfaces prepared in NH3 vapor, and their disordered counterparts are investigated by reflection electron energy loss spectroscopy (REELS) and low-energy electron diffraction. The electron energy loss function is determined from the REELS within the framework of the semiclassical approach. Good agreement between experimental and theoretical functions is achieved at all angles for the disordered GaN surfaces and for the ordered surfaces measured at a kinetic energy of 1000 eV. The agreement is worse for the crystals measured at 200 eV, which is explained by the coherent scattering contributions at low energies. The optical constants of the GaN surfaces are derived from the computed dielectric functions. The surface optical properties of a disordered GaN surface are found to be different from the GaN crystals. There are pronounced changes in the electronic band structure for disordered GaN due to the preferential sputtering of nitrogen. Polar GaN(000-1) (1x1), semipolar GaN(10-13) surfaces prepared in NH3 vapor, and their disordered counterparts are investigated by reflection electron energy loss spectroscopy (REELS) and low-energy electron diffraction. The electron energy loss function is determined from the REELS within the framework of the semiclassical approach. Good agreement between experimental and theoretical functions is achieved at all angles for the disordered GaN surfaces and for the ordered surfaces measured at a kinetic energy of 1000 eV. The agreement is worse for the crystals measured at 200 eV, which is explained by the coherent scattering contributions at low energies. The optical constants of the GaN surfaces are derived from the computed dielectric functions. The surface optical properties of a disordered GaN surface are found to be different from the GaN crystals. There are pronounced changes in the electronic band structure for disordered GaN due to the preferential sputtering of nitrogen. (en)
Title	Dielectric response functions of the (000-1), (10-13) GaN single crystalline and disordered surfaces studied by reflection electron energy loss spectroscopy Dielectric response functions of the (000-1), (10-13) GaN single crystalline and disordered surfaces studied by reflection electron energy loss spectroscopy (en)
skos:prefLabel	Dielectric response functions of the (000-1), (10-13) GaN single crystalline and disordered surfaces studied by reflection electron energy loss spectroscopy Dielectric response functions of the (000-1), (10-13) GaN single crystalline and disordered surfaces studied by reflection electron energy loss spectroscopy (en)
skos:notation	RIV/68378271:_____/11:00374550!RIV12-AV0-68378271
http://linked.open...avai/riv/aktivita	P Z
http://linked.open...avai/riv/aktivity	P(GPP204/10/P028), Z(AV0Z10100521)
http://linked.open...iv/cisloPeriodika	4
http://linked.open...vai/riv/dodaniDat	2012
http://linked.open...aciTvurceVysledku	Jiříček, Petr Zemek, Josef Romanyuk, Olexandr
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Fyzikální ústav AV ČR, v. v. i.
http://linked.open...dnocenehoVysledku	194512
http://linked.open...ai/riv/idVysledku	RIV/68378271:_____/11:00374550
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	GaN; REELS; optical constants; semiconductor surfaces (en)
http://linked.open.../riv/klicoveSlovo	REELS optical constants semiconductor surfaces GaN
http://linked.open...odStatuVydavatele	US - Spojené státy americké
http://linked.open...ontrolniKodProRIV	[CF7BD1628FBE]
http://linked.open...i/riv/nazevZdroje	Journal of Applied Physics
http://linked.open...in/vavai/riv/obor	BM
http://linked.open...ichTvurcuVysledku	3 (xsd:int)
http://linked.open...cetTvurcuVysledku	5 (xsd:int)
http://linked.open...vavai/riv/projekt	Electron energy losses at solid surfaces
http://linked.open...UplatneniVysledku	2011
http://linked.open...v/svazekPeriodika	110
http://linked.open...iv/tvurceVysledku	Jiříček, Petr Romanyuk, Olexandr Paskova, T. Tougaard, S. Zemek, Josef
http://linked.open...ain/vavai/riv/wos	000294484300027
http://linked.open...n/vavai/riv/zamer	Physics and technology of nanostructures, surfaces and thin films
issn	0021-8979
number of pages	7 (xsd:int)
http://bibframe.org/vocab/doi	10.1063/1.3622674

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