The initial stages of Ag/Ag(1 0 0) homoepitaxy: Scanning tunneling microscopy experiments and Monte Carlo simulations

C. M. Zhang; M. C. Bartelt; J. M. Wen; C. J. Jenks; J. W. Evans; P. A. Thiel

doi:10.1016/S0022-0248(97)00063-8

The initial stages of Ag/Ag(1 0 0) homoepitaxy: Scanning tunneling microscopy experiments and Monte Carlo simulations

C. M. Zhang, M. C. Bartelt, J. M. Wen, C. J. Jenks, J. W. Evans, P. A. Thiel

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Abstract

Results are presented of a scanning tunneling microscopy study of Ag/Ag(1 0 0) homoepitaxy. We examine both submonolayer nucleation and growth of two-dimensional islands, for temperatures between 295 and 370 K, and the initial stages of multilayer kinetic roughening at 295 K. Comparison with results of Monte Carlo simulations for an appropriate model for metal(1 0 0) homoepitaxy produces estimates of 330 ± 5 meV for the terrace diffusion barrier, and an effective value of 30 ± 5 meV for the additional step-edge barrier (assuming a common prefactor of 10¹²/s). We also assess adatom-adatom bonding by analyzing the transition from irreversible to reversible island formation.

Original language	English
Pages (from-to)	851-857
Number of pages	7
Journal	Journal of Crystal Growth
Volume	174
Issue number	1-4
DOIs	https://doi.org/10.1016/S0022-0248(97)00063-8
State	Published - Apr 1997
Externally published	Yes

Funding

This work was supported by NSF Grant No. CHE-9317660. It was performed at Ames Laboratory, which is operated for the USDOE by Iowa State University under contract No. W-7405-Eng-82.

Keywords

Epitaxy
Kinetic roughening
Nucleation
Scanning tunneling microscopy
Silver
Surface diffusion

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10.1016/S0022-0248(97)00063-8

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title = "The initial stages of Ag/Ag(1 0 0) homoepitaxy: Scanning tunneling microscopy experiments and Monte Carlo simulations",

abstract = "Results are presented of a scanning tunneling microscopy study of Ag/Ag(1 0 0) homoepitaxy. We examine both submonolayer nucleation and growth of two-dimensional islands, for temperatures between 295 and 370 K, and the initial stages of multilayer kinetic roughening at 295 K. Comparison with results of Monte Carlo simulations for an appropriate model for metal(1 0 0) homoepitaxy produces estimates of 330 ± 5 meV for the terrace diffusion barrier, and an effective value of 30 ± 5 meV for the additional step-edge barrier (assuming a common prefactor of 1012/s). We also assess adatom-adatom bonding by analyzing the transition from irreversible to reversible island formation.",

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T2 - Scanning tunneling microscopy experiments and Monte Carlo simulations

AU - Zhang, C. M.

AU - Bartelt, M. C.

AU - Wen, J. M.

AU - Jenks, C. J.

AU - Evans, J. W.

AU - Thiel, P. A.

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N2 - Results are presented of a scanning tunneling microscopy study of Ag/Ag(1 0 0) homoepitaxy. We examine both submonolayer nucleation and growth of two-dimensional islands, for temperatures between 295 and 370 K, and the initial stages of multilayer kinetic roughening at 295 K. Comparison with results of Monte Carlo simulations for an appropriate model for metal(1 0 0) homoepitaxy produces estimates of 330 ± 5 meV for the terrace diffusion barrier, and an effective value of 30 ± 5 meV for the additional step-edge barrier (assuming a common prefactor of 1012/s). We also assess adatom-adatom bonding by analyzing the transition from irreversible to reversible island formation.

AB - Results are presented of a scanning tunneling microscopy study of Ag/Ag(1 0 0) homoepitaxy. We examine both submonolayer nucleation and growth of two-dimensional islands, for temperatures between 295 and 370 K, and the initial stages of multilayer kinetic roughening at 295 K. Comparison with results of Monte Carlo simulations for an appropriate model for metal(1 0 0) homoepitaxy produces estimates of 330 ± 5 meV for the terrace diffusion barrier, and an effective value of 30 ± 5 meV for the additional step-edge barrier (assuming a common prefactor of 1012/s). We also assess adatom-adatom bonding by analyzing the transition from irreversible to reversible island formation.

KW - Epitaxy

KW - Kinetic roughening

KW - Nucleation

KW - Scanning tunneling microscopy

KW - Silver

KW - Surface diffusion

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The initial stages of Ag/Ag(1 0 0) homoepitaxy: Scanning tunneling microscopy experiments and Monte Carlo simulations

Abstract

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Keywords

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