(3x1)-Br/Pt(110) structure and the charge-density-wave-assisted c(2x2) to (3x1) phase transition

(3x1) transition in the Br/Pt(110) adsorption system. This includes the atomic structure of the (3x1) phase as determined by quantitative low-energy electron diffraction (LEED) and density functional theory calculations. While in the parent c(2x2) phase with coverage Theta=1/2 ML the Br atoms occupy every second short-bridge site on the unreconstructed (1x1)-Pt(110) surface, the adatoms in the (3x1) phase at coverage Theta=2/3 ML reside in every third short-bridge and long-bridge sites. Charge densities and vertical relaxations of the Pt atoms forming the short- and long-bridge sites are different, thus yielding a modulation of both, the charge and the position of the outermost Pt atoms with a period of three nearest-neighbor spacings. For 1/2 ML -->
Popis souboru: STAMPA
Jazyk: English
Přístupová URL adresa: https://explore.openaire.eu/search/publication?articleId=od______4094::010600754cd59cfe56bbe60bc8c4025a
http://hdl.handle.net/11585/727450
Rights: CLOSED
Přírůstkové číslo: edsair.od......4094..010600754cd59cfe56bbe60bc8c4025a
Autor: Deisl C, Swamy K, Memmel N, Bertel E, Franchini C, Schneider G, Redinger J, Walter S, Hammer L, Heinz K
Přispěvatelé: Deisl C, Swamy K, Memmel N, Bertel E, Franchini C, Schneider G, Redinger J, Walter S, Hammer L, Heinz K
Jazyk: angličtina
Rok vydání: 2004
Předmět:
Popis: After our recent report on the formation of a (3x1) charge-density-wave phase in the quasi-one-dimensional system Br/Pt(110) we present a detailed investigation of the c(2x2)-->(3x1) transition in the Br/Pt(110) adsorption system. This includes the atomic structure of the (3x1) phase as determined by quantitative low-energy electron diffraction (LEED) and density functional theory calculations. While in the parent c(2x2) phase with coverage Theta=1/2 ML the Br atoms occupy every second short-bridge site on the unreconstructed (1x1)-Pt(110) surface, the adatoms in the (3x1) phase at coverage Theta=2/3 ML reside in every third short-bridge and long-bridge sites. Charge densities and vertical relaxations of the Pt atoms forming the short- and long-bridge sites are different, thus yielding a modulation of both, the charge and the position of the outermost Pt atoms with a period of three nearest-neighbor spacings. For 1/2 ML
Databáze: OpenAIRE
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