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Decay of Two-Dimensional Islands on Ag(110)

Morgenstern, K. / Lægsgaard, E. / Besenbacher, F.

Abstract We have investigated the decay of two-dimensional (2D) islands on the anisotropic Ag(110) surface using variable-temperature scanning tunneling microscopy. Contrary to predictions from traditional Ostwald ripening theory, a quasi-one-dimensional (1D) decay mode was observed at low temperatures (175–220 K). A surprisingly sharp transition to the quasi-2D decay mode was observed around 220 K. This transition was accompanied by a fast equilibration of the island shape. These findings have tentatively been rationalized within a simple model to identify the underlying rate limiting atomistic processes.

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Decay of Two-Dimensional Islands on Ag(110)

Morgenstern, K. / Lægsgaard, E. / Besenbacher, F.

Abstract We have investigated the decay of two-dimensional (2D) islands on the anisotropic Ag(110) surface using variable-temperature scanning tunneling microscopy. Contrary to predictions from traditional Ostwald ripening theory, a quasi-one-dimensional (1D) decay mode was observed at low temperatures (175–220 K). A surprisingly sharp transition to the quasi-2D decay mode was observed around 220 K. This transition was accompanied by a fast equilibration of the island shape. These findings have tentatively been rationalized within a simple model to identify the underlying rate limiting atomistic processes.

Decay of Two-Dimensional Islands on Ag(110)

Morgenstern, K. / Lægsgaard, E. / Besenbacher, F.

Abstract We have investigated the decay of two-dimensional (2D) islands on the anisotropic Ag(110) surface using variable-temperature scanning tunneling microscopy. Contrary to predictions from traditional Ostwald ripening theory, a quasi-one-dimensional (1D) decay mode was observed at low temperatures (175–220 K). A surprisingly sharp transition to the quasi-2D decay mode was observed around 220 K. This transition was accompanied by a fast equilibration of the island shape. These findings have tentatively been rationalized within a simple model to identify the underlying rate limiting atomistic processes.

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Title:

Decay of Two-Dimensional Islands on Ag(110)

Contributors:

Morgenstern, K. (author) / Lægsgaard, E. (author) / Besenbacher, F. (author)

Published in:

Collective Diffusion on Surfaces: Correlation Effects and Adatom Interactions ; 201-212

NATO Science Series II: Mathematics, Physics and Chemistry ; 29

Publication date:

2001-01-01

Size:

12 pages

ISBN:

978-0-7923-7116-8 , 978-94-010-0816-7

ISSN:

DOI:

https://doi.org/10.1007/978-94-010-0816-7_18

Type of media:

Article/Chapter (Book)

Type of material:

Electronic Resource

Language:

English

Keywords:

Scanning Tunnelling Microscope , Scanning Tunnelling Microscope Image , Step Edge , Effective Medium Theory , Anisotropic Surface Physics , Condensed Matter Physics , Surfaces and Interfaces, Thin Films

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