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STRUCTURE CHANGES FORCu(111)/LiOBSERVED VIA DISCRETE QUANTUM WELL STATES

Author

Listed:
  • A. CARLSSON

    (Physics Department, Chalmers University of Technology, 41296 Göteborg, Sweden)

  • D. CLAESSON

    (Physics Department, Chalmers University of Technology, 41296 Göteborg, Sweden)

  • G. KATRICH

    (Physics Department, Chalmers University of Technology, 41296 Göteborg, Sweden;)

  • S.-Å LINDGREN

    (Physics Department, Chalmers University of Technology, 41296 Göteborg, Sweden)

  • L. WALLDÉN

    (Physics Department, Chalmers University of Technology, 41296 Göteborg, Sweden)

Abstract

Via photoemission in the near UV from discrete quantum well states, four different types of atom rearrangements are observed forCu(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.

Suggested Citation

  • A. Carlsson & D. Claesson & G. Katrich & S.-Å Lindgren & L. Walldén, 1997. "STRUCTURE CHANGES FORCu(111)/LiOBSERVED VIA DISCRETE QUANTUM WELL STATES," Surface Review and Letters (SRL), World Scientific Publishing Co. Pte. Ltd., vol. 4(06), pages 1233-1237.
  • Handle: RePEc:wsi:srlxxx:v:04:y:1997:i:06:n:s0218625x97001590
    DOI: 10.1142/S0218625X97001590
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