The growth of Pb nanocrystals on Si(111)7×7: Quantum size effects

C. A. Jeffrey; R. Feng; E. H. Conrad; P. F. Miceli; C. Kim; M. Hupalo; M. C. Tringides; P. J. Ryan

doi:10.1016/j.spmi.2006.10.007

The growth of Pb nanocrystals on Si(111)7×7: Quantum size effects

C. A. Jeffrey, R. Feng, E. H. Conrad, P. F. Miceli, C. Kim, M. Hupalo, M. C. Tringides, P. J. Ryan

Research output: Contribution to journal › Article › peer-review

4 Citations (Scopus)

Abstract

Surface X-ray scattering and scanning-tunneling microscopy experiments, performed in situ, are used to investigate the influence of quantum size effects on the growth of Pb on the Si(111)7×7 surface. It is demonstrated that the structure of Pb islands and the associated wetting layer are consistent with the effects of quantum confinement. Moreover, these effects lead to novel behavior for the coarsening evolution of the Pb islands. For example, Ostwald ripening is not observed due to a breakdown of the classical Gibbs-Thomson effect. An unanticipated strong dependence on the deposition flux rate is found and we measure island decay times that are orders of magnitude faster than predicted. These results have important implications for understanding and controlling the growth of nanostructures.

Original language	English
Pages (from-to)	168-177
Number of pages	10
Journal	Superlattices and Microstructures
Volume	41
Issue number	2-3
DOIs	https://doi.org/10.1016/j.spmi.2006.10.007
Publication status	Published - Feb 2007

Bibliographical note

Funding Information:
Financial support is gratefully acknowledged from the University of Missouri Research Board, the National Science Foundation DMR0405742, the Petroleum Research Fund 41792-AC10 (PFM, CAJ, CK), Canim Scientific Group (EHC), the Ames Laboratory (MCT, MH), and the Natural Sciences and Engineering Research Council (NSERC) of Canada (CAJ). The Advanced Photon Source is supported by the DOE Office of Basic Energy Sciences, Contract No. W-31-109-Eng-38. The MUCAT beam line is supported through Ames Laboratory, operated for the U.S. DOE by Iowa State University under Contract No. W-7405-Eng-82.

Keywords

Nanocrystals
Pb
Si
X-ray scattering

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10.1016/j.spmi.2006.10.007

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title = "The growth of Pb nanocrystals on Si(111)7×7: Quantum size effects",

abstract = "Surface X-ray scattering and scanning-tunneling microscopy experiments, performed in situ, are used to investigate the influence of quantum size effects on the growth of Pb on the Si(111)7×7 surface. It is demonstrated that the structure of Pb islands and the associated wetting layer are consistent with the effects of quantum confinement. Moreover, these effects lead to novel behavior for the coarsening evolution of the Pb islands. For example, Ostwald ripening is not observed due to a breakdown of the classical Gibbs-Thomson effect. An unanticipated strong dependence on the deposition flux rate is found and we measure island decay times that are orders of magnitude faster than predicted. These results have important implications for understanding and controlling the growth of nanostructures.",

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note = "Funding Information: Financial support is gratefully acknowledged from the University of Missouri Research Board, the National Science Foundation DMR0405742, the Petroleum Research Fund 41792-AC10 (PFM, CAJ, CK), Canim Scientific Group (EHC), the Ames Laboratory (MCT, MH), and the Natural Sciences and Engineering Research Council (NSERC) of Canada (CAJ). The Advanced Photon Source is supported by the DOE Office of Basic Energy Sciences, Contract No. W-31-109-Eng-38. The MUCAT beam line is supported through Ames Laboratory, operated for the U.S. DOE by Iowa State University under Contract No. W-7405-Eng-82.",

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doi = "10.1016/j.spmi.2006.10.007",

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AU - Jeffrey, C. A.

AU - Feng, R.

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AU - Miceli, P. F.

AU - Kim, C.

AU - Hupalo, M.

AU - Tringides, M. C.

AU - Ryan, P. J.

N1 - Funding Information: Financial support is gratefully acknowledged from the University of Missouri Research Board, the National Science Foundation DMR0405742, the Petroleum Research Fund 41792-AC10 (PFM, CAJ, CK), Canim Scientific Group (EHC), the Ames Laboratory (MCT, MH), and the Natural Sciences and Engineering Research Council (NSERC) of Canada (CAJ). The Advanced Photon Source is supported by the DOE Office of Basic Energy Sciences, Contract No. W-31-109-Eng-38. The MUCAT beam line is supported through Ames Laboratory, operated for the U.S. DOE by Iowa State University under Contract No. W-7405-Eng-82.

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AB - Surface X-ray scattering and scanning-tunneling microscopy experiments, performed in situ, are used to investigate the influence of quantum size effects on the growth of Pb on the Si(111)7×7 surface. It is demonstrated that the structure of Pb islands and the associated wetting layer are consistent with the effects of quantum confinement. Moreover, these effects lead to novel behavior for the coarsening evolution of the Pb islands. For example, Ostwald ripening is not observed due to a breakdown of the classical Gibbs-Thomson effect. An unanticipated strong dependence on the deposition flux rate is found and we measure island decay times that are orders of magnitude faster than predicted. These results have important implications for understanding and controlling the growth of nanostructures.

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The growth of Pb nanocrystals on Si(111)7×7: Quantum size effects

Abstract

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Keywords

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