Dynamics and stability of nanostructures on metal surfaces

G. Rosenfeld; K. Morgenstern; M. Esser; G. Comsa

doi:10.1007/s003390051448

Dynamics and stability of nanostructures on metal surfaces

G. Rosenfeld, K. Morgenstern, M. Esser, G. Comsa

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Abstract

Ultrathin metal films consisting of two-dimensional clusters are typically unstable: the cluster ensemble has the tendency to reduce its total free energy via Ostwald ripening or dynamic coalescence of mobile clusters. In this paper we give an overview of recent model experiments addressing these coarsening mechanisms. The experiments have been performed using STM on ensembles consisting of adatom or vacancy clusters with typical diameters in the nanometer range on fcc(111)-metal surfaces. Agreement with and deviations from conventional theories are discussed.

Original language	English
Pages (from-to)	489-496
Number of pages	8
Journal	Applied physics A: Materials science and processing
Volume	69
Issue number	5
DOIs	https://doi.org/10.1007/s003390051448
Publication status	Published - 1999

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title = "Dynamics and stability of nanostructures on metal surfaces",

abstract = "Ultrathin metal films consisting of two-dimensional clusters are typically unstable: the cluster ensemble has the tendency to reduce its total free energy via Ostwald ripening or dynamic coalescence of mobile clusters. In this paper we give an overview of recent model experiments addressing these coarsening mechanisms. The experiments have been performed using STM on ensembles consisting of adatom or vacancy clusters with typical diameters in the nanometer range on fcc(111)-metal surfaces. Agreement with and deviations from conventional theories are discussed.",

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AU - Rosenfeld, G.

AU - Morgenstern, K.

AU - Esser, M.

AU - Comsa, G.

PY - 1999

Y1 - 1999

N2 - Ultrathin metal films consisting of two-dimensional clusters are typically unstable: the cluster ensemble has the tendency to reduce its total free energy via Ostwald ripening or dynamic coalescence of mobile clusters. In this paper we give an overview of recent model experiments addressing these coarsening mechanisms. The experiments have been performed using STM on ensembles consisting of adatom or vacancy clusters with typical diameters in the nanometer range on fcc(111)-metal surfaces. Agreement with and deviations from conventional theories are discussed.

AB - Ultrathin metal films consisting of two-dimensional clusters are typically unstable: the cluster ensemble has the tendency to reduce its total free energy via Ostwald ripening or dynamic coalescence of mobile clusters. In this paper we give an overview of recent model experiments addressing these coarsening mechanisms. The experiments have been performed using STM on ensembles consisting of adatom or vacancy clusters with typical diameters in the nanometer range on fcc(111)-metal surfaces. Agreement with and deviations from conventional theories are discussed.

U2 - 10.1007/s003390051448

DO - 10.1007/s003390051448

M3 - Article

SN - 0947-8396

VL - 69

SP - 489

EP - 496

JO - Applied physics A: Materials science and processing

JF - Applied physics A: Materials science and processing

IS - 5

ER -

Dynamics and stability of nanostructures on metal surfaces

Abstract

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