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Title: Determining whether metals nucleate homogeneously on graphite: A case study with copper

Journal Article · · Physical Review. B, Condensed Matter and Materials Physics
 [1];  [2];  [1];  [3];  [1];  [1];  [4];  [1];  [1]
  1. Ames Lab., Ames, IA (United States); Iowa State Univ., Ames, IA (United States)
  2. Ames Lab., Ames, IA (United States); Iowa State Univ., Ames, IA (United States); Institute of Solid State Physics, CAS (China)
  3. Ames Lab., Ames, IA (United States)
  4. Iowa State Univ., Ames, IA (United States)

In this study, we observe that Cu clusters grow on surface terraces of graphite as a result of physical vapor deposition in ultrahigh vacuum. We show that the observation is incompatible with a variety of models incorporating homogeneous nucleation and calculations of atomic-scale energetics. An alternative explanation, ion-mediated heterogeneous nucleation, is proposed and validated, both with theory and experiment. This serves as a case study in identifying when and whether the simple, common observation of metal clusters on carbon-rich surfaces can be interpreted in terms of homogeneous nucleation. We describe a general approach for making system-specific and laboratory-specific predictions.

Research Organization:
Ames Laboratory (AMES), Ames, IA (United States)
Sponsoring Organization:
USDOE
Grant/Contract Number:
AC02-07CH11358
OSTI ID:
1225534
Alternate ID(s):
OSTI ID: 1180527
Report Number(s):
IS-J-8547; PRBMDO
Journal Information:
Physical Review. B, Condensed Matter and Materials Physics, Vol. 90, Issue 19; ISSN 1098-0121
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 14 works
Citation information provided by
Web of Science

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Cited By (3)

Point island models for nucleation and growth of supported nanoclusters during surface deposition journal December 2016
Spontaneous selective deposition of iron oxide nanoparticles on graphite as model catalysts journal January 2019
Adsorption of dysprosium on the graphite (0001) surface: Nucleation and growth at 300 K journal December 2016

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