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**Harvard**

Hyldgaard, P. och Einstein, T. (2004) *Interactions Mediated by Surface State: From Pairs and Trios to Adchains and Ordered Overlayers*.

** BibTeX **

@article{

Hyldgaard2004,

author={Hyldgaard, Per and Einstein, T. L.},

title={Interactions Mediated by Surface State: From Pairs and Trios to Adchains and Ordered Overlayers},

journal={Journal of Crystal Growth},

volume={275},

pages={1637},

abstract={Since metallic surface states on (1 1 1) noble metals are free-electron like, their propagators can be evaluated analytically. Since they are well-screened, one can use simple tight-binding formalism to study their effects. The needed phase shifts can be extracted from the experiment. Hence, one can now make quantitative predictions of these slowly-decaying, oscillatory indirect interactions. For the (isotropic!) pair interactions (which decay as the inverse square of adatom–adatom separation), remarkable agreement has been obtained with experiments by two groups. We have extended the formalism to consider the full indirect (“triple”) interaction of 3 adsorbates, which is the sum of the 3 constituent pair interactions plus the non-pairwise “trio” contribution, which tends to decay with the View the MathML source power of perimeter. Here, we concentrate on interactions due to ordered overlayers and to linear defects, relating the latter to the interactions of (n×1) ordered overlayers and both to the constituent pair and trio interactions. We compare with the experimental studies of interactions of adatoms with adchains and of consequent 1D motion of adatoms trapped between two such parallel chains. We discuss the implications for step–step interactions (on vicinal surfaces), with attention to the modification of the surface state itself for small terrace widths.},

year={2004},

keywords={Surface states, Noble metal surfaces, nanostructures, adchains, Friedel oscillations},

}

** RefWorks **

RT Journal Article

SR Print

ID 2087

A1 Hyldgaard, Per

A1 Einstein, T. L.

T1 Interactions Mediated by Surface State: From Pairs and Trios to Adchains and Ordered Overlayers

YR 2004

JF Journal of Crystal Growth

VO 275

AB Since metallic surface states on (1 1 1) noble metals are free-electron like, their propagators can be evaluated analytically. Since they are well-screened, one can use simple tight-binding formalism to study their effects. The needed phase shifts can be extracted from the experiment. Hence, one can now make quantitative predictions of these slowly-decaying, oscillatory indirect interactions. For the (isotropic!) pair interactions (which decay as the inverse square of adatom–adatom separation), remarkable agreement has been obtained with experiments by two groups. We have extended the formalism to consider the full indirect (“triple”) interaction of 3 adsorbates, which is the sum of the 3 constituent pair interactions plus the non-pairwise “trio” contribution, which tends to decay with the View the MathML source power of perimeter. Here, we concentrate on interactions due to ordered overlayers and to linear defects, relating the latter to the interactions of (n×1) ordered overlayers and both to the constituent pair and trio interactions. We compare with the experimental studies of interactions of adatoms with adchains and of consequent 1D motion of adatoms trapped between two such parallel chains. We discuss the implications for step–step interactions (on vicinal surfaces), with attention to the modification of the surface state itself for small terrace widths.

LA eng

OL 30