Size fluctuations of near critical and Gibbs free energy for nucleation of BDA on Cu(001)

Daniel Schwarz, Raoul van Gastel, Henricus J.W. Zandvliet, Bene Poelsema

Research output: Contribution to journalArticleAcademicpeer-review

12 Citations (Scopus)
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Abstract

We present a low-energy electron microscopy study of nucleation and growth of BDA on Cu(001) at low supersaturation. At sufficiently high coverage, a dilute BDA phase coexists with c(8×8) crystallites. The real-time microscopic information allows a direct visualization of near-critical nuclei, determination of the supersaturation and the line tension of the crystallites, and, thus, derivation of the Gibbs free energy for nucleation. The resulting critical nucleus size nicely agrees with the measured value. Nuclei up to 4-6 times larger still decay with finite probability, urging reconsideration of the classic perception of a critical nucleus.
Original languageEnglish
Article number016101
Pages (from-to)016101-
Number of pages5
JournalPhysical review letters
Volume109
Issue number1
DOIs
Publication statusPublished - 2012

Keywords

  • METIS-287266
  • IR-81096

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