Rare gases physisorbed on Pt(111): A low-temperature STM investigation

Frédéric Brunet; Renald Schaub; Stefan Fédrigo; René Monot; Jean Buttet; Wolfgang Harbich

doi:10.1016/S0039-6028(02)01518-2

Rare gases physisorbed on Pt(111): A low-temperature STM investigation

Frédéric Brunet, Renald Schaub, Stefan Fédrigo, René Monot, Jean Buttet, Wolfgang Harbich

Research output: Contribution to journal › Article › peer-review

21 Citations (Scopus)

Abstract

The structure and the phase transitions of Xe, Kr and Ar physisorbed on Pt(111) in the submonolayer-coverage range has been explored by low-temperature scanning tunneling microscopy. The hexagonal incommensurate rotated (HIR) hexagonal incommensurate (HI) transition with decreasing Xe coverage has been observed unambiguously. The onset of adlayer rotation occurs for Xe islands larger than 700 Å². Xe dimers physisorbed on Pt(111) are commensurately ordered on the Pt(111) surface. The experimental results are compared to molecular dynamic simulations.
The orientation of the high order of commensurability (HOC) Kr structure with respect to the surface strongly depends on the terrace width and on the step morphology. Kr monolayer misorientation ranging from 0degrees to 30degrees has been observed depending on the surface morphology.
The Ar monolayer adopts a HOC structure aligned with respect to the Pt(111) surface while for low coverage, the most energitically favorable position of the Ar islands corresponds to a R(1.875 x n)º (n an integer) HI structure.

Original language	English
Pages (from-to)	201-220
Number of pages	20
Journal	Surface Science
Volume	512
DOIs	https://doi.org/10.1016/S0039-6028(02)01518-2
Publication status	Published - 1 Jul 2002

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title = "Rare gases physisorbed on Pt(111): A low-temperature STM investigation",

abstract = "The structure and the phase transitions of Xe, Kr and Ar physisorbed on Pt(111) in the submonolayer-coverage range has been explored by low-temperature scanning tunneling microscopy. The hexagonal incommensurate rotated (HIR) hexagonal incommensurate (HI) transition with decreasing Xe coverage has been observed unambiguously. The onset of adlayer rotation occurs for Xe islands larger than 700 {\AA}2. Xe dimers physisorbed on Pt(111) are commensurately ordered on the Pt(111) surface. The experimental results are compared to molecular dynamic simulations. The orientation of the high order of commensurability (HOC) Kr structure with respect to the surface strongly depends on the terrace width and on the step morphology. Kr monolayer misorientation ranging from 0degrees to 30degrees has been observed depending on the surface morphology. The Ar monolayer adopts a HOC structure aligned with respect to the Pt(111) surface while for low coverage, the most energitically favorable position of the Ar islands corresponds to a R(1.875 x n)º (n an integer) HI structure.",

author = "Fr{\'e}d{\'e}ric Brunet and Renald Schaub and Stefan F{\'e}drigo and Ren{\'e} Monot and Jean Buttet and Wolfgang Harbich",

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doi = "10.1016/S0039-6028(02)01518-2",

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T1 - Rare gases physisorbed on Pt(111): A low-temperature STM investigation

AU - Brunet, Frédéric

AU - Schaub, Renald

AU - Fédrigo, Stefan

AU - Monot, René

AU - Buttet, Jean

AU - Harbich, Wolfgang

PY - 2002/7/1

Y1 - 2002/7/1

N2 - The structure and the phase transitions of Xe, Kr and Ar physisorbed on Pt(111) in the submonolayer-coverage range has been explored by low-temperature scanning tunneling microscopy. The hexagonal incommensurate rotated (HIR) hexagonal incommensurate (HI) transition with decreasing Xe coverage has been observed unambiguously. The onset of adlayer rotation occurs for Xe islands larger than 700 Å2. Xe dimers physisorbed on Pt(111) are commensurately ordered on the Pt(111) surface. The experimental results are compared to molecular dynamic simulations. The orientation of the high order of commensurability (HOC) Kr structure with respect to the surface strongly depends on the terrace width and on the step morphology. Kr monolayer misorientation ranging from 0degrees to 30degrees has been observed depending on the surface morphology. The Ar monolayer adopts a HOC structure aligned with respect to the Pt(111) surface while for low coverage, the most energitically favorable position of the Ar islands corresponds to a R(1.875 x n)º (n an integer) HI structure.

AB - The structure and the phase transitions of Xe, Kr and Ar physisorbed on Pt(111) in the submonolayer-coverage range has been explored by low-temperature scanning tunneling microscopy. The hexagonal incommensurate rotated (HIR) hexagonal incommensurate (HI) transition with decreasing Xe coverage has been observed unambiguously. The onset of adlayer rotation occurs for Xe islands larger than 700 Å2. Xe dimers physisorbed on Pt(111) are commensurately ordered on the Pt(111) surface. The experimental results are compared to molecular dynamic simulations. The orientation of the high order of commensurability (HOC) Kr structure with respect to the surface strongly depends on the terrace width and on the step morphology. Kr monolayer misorientation ranging from 0degrees to 30degrees has been observed depending on the surface morphology. The Ar monolayer adopts a HOC structure aligned with respect to the Pt(111) surface while for low coverage, the most energitically favorable position of the Ar islands corresponds to a R(1.875 x n)º (n an integer) HI structure.

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U2 - 10.1016/S0039-6028(02)01518-2

DO - 10.1016/S0039-6028(02)01518-2

M3 - Article

SN - 0039-6028

VL - 512

SP - 201

EP - 220

JO - Surface Science

JF - Surface Science

ER -

Rare gases physisorbed on Pt(111): A low-temperature STM investigation

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