The structure of Al(111) (√3x√3)R30° K determined by LEED: Stable and metastable adsorption sites

C. Stampfl; J. Burchhardt; Martin Meedom Nielsen; D.L. Adams; M. Scheffler; H. Over; W. Moritz

doi:10.1016/0039-6028(93)90815-2

The structure of Al(111) (√3x√3)R30° K determined by LEED: Stable and metastable adsorption sites

C. Stampfl
, J. Burchhardt
, Martin Meedom Nielsen
, D.L. Adams
, M. Scheffler
, H. Over
, W. Moritz

Fritz Haber Institute of the Max Planck Society
Aarhus University
Ludwig Maximilian University of Munich

Research output: Contribution to journal › Conference article › Research › peer-review

Abstract

It is found that the adsorption of potassium on Al(111) at 90 K and at 300 K both result in a (square-root 3 x square-root 3)R30-degrees structure. Through a detailed LEED analysis it is revealed that at 300 K the adatoms occupy substitutional sites and at 90 K the adatoms occupy on-top sites; both geometries have hitherto been considered as very unusual. The relationship between bond length and coordination is discussed with respect to the present results, and with respect to other quantitative studies of alkali-metal/metal adsorption systems.

Original language	English
Journal	Surface Science
Volume	287
Issue number	Part A
Pages (from-to)	418-422
ISSN	0039-6028
DOIs	https://doi.org/10.1016/0039-6028(93)90815-2
Publication status	Published - 1993
Externally published	Yes
Event	8th International Conference on Solid Surfaces (ICSS-8)/12th Unthernational Vacuum congress (IVC-12) - The Hague, Netherlands Duration: 12 Oct 1992 → 16 Oct 1992 Conference number: 8/12

Conference

Conference	8th International Conference on Solid Surfaces (ICSS-8)/12th Unthernational Vacuum congress (IVC-12)
Number	8/12
Country/Territory	Netherlands
City	The Hague
Period	12/10/1992 → 16/10/1992

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@inproceedings{9564f1c5df6a4454887f3ae21e6e3fd3,

title = "The structure of Al(111) (√3x√3)R30° K determined by LEED: Stable and metastable adsorption sites",

abstract = "It is found that the adsorption of potassium on Al(111) at 90 K and at 300 K both result in a (square-root 3 x square-root 3)R30-degrees structure. Through a detailed LEED analysis it is revealed that at 300 K the adatoms occupy substitutional sites and at 90 K the adatoms occupy on-top sites; both geometries have hitherto been considered as very unusual. The relationship between bond length and coordination is discussed with respect to the present results, and with respect to other quantitative studies of alkali-metal/metal adsorption systems. ",

author = "C. Stampfl and J. Burchhardt and Nielsen, \{Martin Meedom\} and D.L. Adams and M. Scheffler and H. Over and W. Moritz",

year = "1993",

doi = "10.1016/0039-6028(93)90815-2",

language = "English",

volume = "287",

pages = "418--422",

journal = "Surface Science",

issn = "0039-6028",

publisher = "Elsevier",

number = "Part A",

note = "8th International Conference on Solid Surfaces (ICSS-8)/12th Unthernational Vacuum congress (IVC-12), ICSS-8/IVC-12 ; Conference date: 12-10-1992 Through 16-10-1992",

}

TY - GEN

T1 - The structure of Al(111) (√3x√3)R30° K determined by LEED

T2 - 8th International Conference on Solid Surfaces (ICSS-8)/12th Unthernational Vacuum congress (IVC-12)

AU - Stampfl, C.

AU - Burchhardt, J.

AU - Nielsen, Martin Meedom

AU - Adams, D.L.

AU - Scheffler, M.

AU - Over, H.

AU - Moritz, W.

N1 - Conference code: 8/12

PY - 1993

Y1 - 1993

N2 - It is found that the adsorption of potassium on Al(111) at 90 K and at 300 K both result in a (square-root 3 x square-root 3)R30-degrees structure. Through a detailed LEED analysis it is revealed that at 300 K the adatoms occupy substitutional sites and at 90 K the adatoms occupy on-top sites; both geometries have hitherto been considered as very unusual. The relationship between bond length and coordination is discussed with respect to the present results, and with respect to other quantitative studies of alkali-metal/metal adsorption systems.

AB - It is found that the adsorption of potassium on Al(111) at 90 K and at 300 K both result in a (square-root 3 x square-root 3)R30-degrees structure. Through a detailed LEED analysis it is revealed that at 300 K the adatoms occupy substitutional sites and at 90 K the adatoms occupy on-top sites; both geometries have hitherto been considered as very unusual. The relationship between bond length and coordination is discussed with respect to the present results, and with respect to other quantitative studies of alkali-metal/metal adsorption systems.

U2 - 10.1016/0039-6028(93)90815-2

DO - 10.1016/0039-6028(93)90815-2

M3 - Conference article

SN - 0039-6028

VL - 287

SP - 418

EP - 422

JO - Surface Science

JF - Surface Science

IS - Part A

Y2 - 12 October 1992 through 16 October 1992

ER -

The structure of Al(111) (√3x√3)R30° K determined by LEED: Stable and metastable adsorption sites

Abstract

Conference

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