Sökning: onr:"swepub:oai:gup.ub.gu.se/76830" > Infrared spectrosco...
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000 | 03117naa a2200409 4500 | |
001 | oai:gup.ub.gu.se/76830 | |
003 | SwePub | |
008 | 240528s2007 | |||||||||||000 ||eng| | |
009 | oai:research.chalmers.se:7c03d96b-f6dd-4a97-81a0-dff8dd9bcac5 | |
024 | 7 | a https://gup.ub.gu.se/publication/768302 URI |
024 | 7 | a https://doi.org/10.1063/1.28048692 DOI |
024 | 7 | a https://research.chalmers.se/publication/768302 URI |
040 | a (SwePub)gud (SwePub)cth | |
041 | a eng | |
042 | 9 SwePub | |
072 | 7 | a ref2 swepub-contenttype |
072 | 7 | a art2 swepub-publicationtype |
100 | 1 | a Gustafsson, Kristian,d 1972u Chalmers tekniska högskola,Chalmers University of Technology4 aut0 (Swepub:cth)gkri |
245 | 1 0 | a Infrared spectroscopy of physisorbed and chemisorbed N-2 in the Pt(111)(3x3)N-2 structure |
264 | 1 | b AIP Publishing,c 2007 |
520 | a Using infrared spectroscopy and low electron energy diffraction, we have investigated the adsorption of N-2, at 30 K, on the Pt(111) and the Pt(111)(1x1)H surfaces. At monolayer coverage, N-2 orders in commensurate (3x3) structures on both surfaces, and we propose that the unit cells contain four molecules in each case. The infrared spectra reveal that N-2 exclusively physisorbs on the Pt(111)(1x1)H surface, while both physisorbed and chemisorbed N-2 is detected on the Pt(111) surface. Physisorbed N-2 is the majority species in the latter case, and the two adsorption states show an almost identical uptake behavior, which indicates that they are intrinsic constituents of the growing (3x3) N-2 islands. An analysis of the infrared absorbance data, based on a simple scaling concept suggested by density functional theory calculations, supports a model in which the (3x3) unit cell contains one chemisorbed molecule in end-on atop configuration and three physisorbed molecules. We note that a classic ''pinwheel'' structure on a hexagonal lattice, with the end-on chemisorbed N2 molecules acting as ''pins,'' is compatible with this composition. (C) 2007 American Institute of Physics. | |
650 | 7 | a TEKNIK OCH TEKNOLOGIERx Annan teknik0 (SwePub)2112 hsv//swe |
650 | 7 | a ENGINEERING AND TECHNOLOGYx Other Engineering and Technologies0 (SwePub)2112 hsv//eng |
653 | a TOTAL-ENERGY CALCULATIONS | |
653 | a DEFECT SITES | |
653 | a PT(111) | |
653 | a ADSORPTION | |
653 | a SURFACES | |
653 | a TOTAL-ENERGY CALCULATIONS | |
700 | 1 | a Karlberg, G. S.u Danmarks Tekniske Universitet,Technical University of Denmark4 aut |
700 | 1 | a Andersson, Stig,d 1941u Gothenburg University,Göteborgs universitet,Institutionen för fysik (GU),Department of Physics (GU),University of Gothenburg4 aut0 (Swepub:gu)xandst |
710 | 2 | a Chalmers tekniska högskolab Danmarks Tekniske Universitet4 org |
773 | 0 | t Journal of Chemical Physicsd : AIP Publishingg 127:19q 127:19x 0021-9606x 1089-7690 |
856 | 4 | u https://backend.orbit.dtu.dk/ws/files/4793547/Karl.pdf |
856 | 4 8 | u https://gup.ub.gu.se/publication/76830 |
856 | 4 8 | u https://doi.org/10.1063/1.2804869 |
856 | 4 8 | u https://research.chalmers.se/publication/76830 |
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