Structure changes for Cu(111)/Li observed via discrete quantum well states
Journal article, 1997

Via photoemission in the near UV from discrete quantum well states, four different types of atom rearrangements are observed for Cu(111)/Li. In the monolayer range a gradual energy shift reflects a gradual compression of the Li layer as more atoms are adsorbed. The onset of Li substitution and formation of a (2×2) structure when, at RT, monolayer Li coverage is exceeded is monitored via the appearance of a quantum well state characteristic of the new phase. A small energy shift indicates that, if it is cooled (170 K), the new structure is unstable with respect to Li adsorption. Finally, an energy downshift with increasing coverage observed for a state characteristic of 2 ML Li is ascribed to an increasing area for one-atomic-layer-high islands formed by Li atoms on top of the first full layer.


Anna K Carlsson

Chalmers, Applied Physics

Dan Claesson

Chalmers, Applied Physics

Galina Katrich

Chalmers, Applied Physics

Stig-Åke Lindgren

Chalmers, Applied Physics

Lars Erik Gustaf Wallden

Chalmers, Applied Physics

Surface Review and Letters

0218-625X (ISSN)

Vol. 4 6 1233-1237

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