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          Institute: MPI für Festkörperforschung     Collection: FKF Publikationen 2002     Display Documents



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ID: 7372.0, MPI für Festkörperforschung / FKF Publikationen 2002
Long-range adsorbate interactions mediated by a two-dimensional electron gas
Authors:Knorr, N.; Brune, H.; Epple, M.; Hirstein, A.; Schneider, M. A.; Kern, K.
Language:English
Date of Publication (YYYY-MM-DD):2002
Title of Journal:Physical Review B
Volume:65
Issue / Number:11
Sequence Number of Article:115420
Review Status:Peer-review
Audience:Not Specified
Abstract / Description:We report on long-range interactions between adsorbates on
metal surfaces with a surface state. A comparison of three
adsorbate/substrate systems [Cu/Cu(111), Co/Cu(111), and
Co/Ag(111)] suggests the general existence of such interactions
and shows up common characteristics. In all cases, the
interaction energy E(r) manifests itself up to a distance of 60
Angstrom, decays as 1/r(2), and oscillates with a period of
lambda(F)/2. Our data are in excellent agreement with theory
and establish the link between the spatial variation of the
interaction energy and the adsorbate scattering properties. We
demonstrate that the long-range interactions stabilize an
ordered two-dimensional (2D) gas of adsorbates and thus create
states of dilute 2D matter.
External Publication Status:published
Document Type:Article
Communicated by:Michaela Asen-Palmer
Affiliations:MPI für Festkörperforschung
External Affiliations:; Ecole Polytech Fed Lausanne, Inst Phys Expt, CH-1015 Lausanne, Switzerland
; Max Planck Inst Festkorperforsch, D-70569 Stuttgart, Germany
Identifiers:ISI:000174548400126
ISSN:0163-1829
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