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Statements

Subject Item
n2:RIV%2F00216305%3A26210%2F09%3APU79998%21RIV10-MSM-26210___
rdf:type
n15:Vysledek skos:Concept
dcterms:description
We have examined two adsorption structures of NO on the Pd(111) surface and the transformation between them. Low-energy electron diffraction (LEED) I (V ) curves of the Pd(111)-p(2 x 2)-NO and Pd(111)-c(4 x 2)-NO surface structures were acquired and analyzed using tensor LEED. Our structural models confirm a previous study by scanning tunneling microscopy and DFT (Hansen et al 2002 Surf. Sci. 496 1). In the c(4 x 2)-NO structure, which forms at an NO coverage of 0.5 monolayers (ML), the NO molecules occupy fcc and hcp hollow sites and are almost upright with only slight tilting, possibly related to NO-NO repulsion. In the p(2 x 2)-NO structure (0.75 ML), with two NO molecules in hollow sites and one in an on-top site, we find strong tilting of the on-top molecule. Upon heating, thermal desorption of NO leads to a transition from the p(2 x 2) to the c(4 x 2) structure, which leads to splitting of the diffraction spots and/or streaky spots. The transition is discussed in terms of domain walls. We have examined two adsorption structures of NO on the Pd(111) surface and the transformation between them. Low-energy electron diffraction (LEED) I (V ) curves of the Pd(111)-p(2 x 2)-NO and Pd(111)-c(4 x 2)-NO surface structures were acquired and analyzed using tensor LEED. Our structural models confirm a previous study by scanning tunneling microscopy and DFT (Hansen et al 2002 Surf. Sci. 496 1). In the c(4 x 2)-NO structure, which forms at an NO coverage of 0.5 monolayers (ML), the NO molecules occupy fcc and hcp hollow sites and are almost upright with only slight tilting, possibly related to NO-NO repulsion. In the p(2 x 2)-NO structure (0.75 ML), with two NO molecules in hollow sites and one in an on-top site, we find strong tilting of the on-top molecule. Upon heating, thermal desorption of NO leads to a transition from the p(2 x 2) to the c(4 x 2) structure, which leads to splitting of the diffraction spots and/or streaky spots. The transition is discussed in terms of domain walls.
dcterms:title
A LEED study of NO superstructures on the Pd(111) surface A LEED study of NO superstructures on the Pd(111) surface
skos:prefLabel
A LEED study of NO superstructures on the Pd(111) surface A LEED study of NO superstructures on the Pd(111) surface
skos:notation
RIV/00216305:26210/09:PU79998!RIV10-MSM-26210___
n3:aktivita
n8:Z n8:P
n3:aktivity
P(GEFON/06/E001), P(LC06040), Z(MSM0021630508)
n3:cisloPeriodika
13
n3:dodaniDat
n13:2010
n3:domaciTvurceVysledku
n11:8906793 n11:6804233
n3:druhVysledku
n12:J
n3:duvernostUdaju
n4:S
n3:entitaPredkladatele
n6:predkladatel
n3:idSjednocenehoVysledku
301304
n3:idVysledku
RIV/00216305:26210/09:PU79998
n3:jazykVysledku
n16:eng
n3:klicovaSlova
NO, PD(111), tensor LEED, superstructure
n3:klicoveSlovo
n5:PD%28111%29 n5:NO n5:superstructure n5:tensor%20LEED
n3:kodStatuVydavatele
GB - Spojené království Velké Británie a Severního Irska
n3:kontrolniKodProRIV
[BC21818B2E93]
n3:nazevZdroje
Journal of Physics: Condensed Matter
n3:obor
n18:BM
n3:pocetDomacichTvurcuVysledku
2
n3:pocetTvurcuVysledku
4
n3:projekt
n10:LC06040 n10:GEFON%2F06%2FE001
n3:rokUplatneniVysledku
n13:2009
n3:svazekPeriodika
21
n3:tvurceVysledku
Varga, P. Šikola, Tomáš Schmid, Michael Kostelník, Petr
n3:zamer
n19:MSM0021630508
s:issn
0953-8984
s:numberOfPages
7
n17:organizacniJednotka
26210