Temperature-dependent structure, elasticity, and entropic stability of Bi phases on Cu(111)

Raoul van Gastel, D Kaminski, E. Vlieg, Bene Poelsema

Research output: Contribution to journalArticleAcademicpeer-review

4 Citations (Scopus)

Abstract

We have used low energy electron microscopy (LEEM) to characterize the structure and stability of Bi phases on Cu{111}. As a function of temperature we find that the Cu{111}(3√×3√)R30∘-Bi surface alloy phase gradually dealloys and is fully depleted from Bi at a temperature of 803 K. The dealloying leads to a defect induced change of its elastic properties. The Bi surface alloy phase coexists with a Bi overlayer phase that exhibits a sharp decrease in density in a narrow temperature interval just below the temperature where the surface alloy phase has fully dealloyed. LEEM is used to directly evaluate the structure as well as the entropic contributions that determine the stability of each of the phases
Original languageEnglish
Article number075431
Pages (from-to)-
JournalPhysical review B: Condensed matter and materials physics
Volume89
Issue number7
DOIs
Publication statusPublished - 2014

Keywords

  • IR-94865
  • METIS-303530

Fingerprint Dive into the research topics of 'Temperature-dependent structure, elasticity, and entropic stability of Bi phases on Cu(111)'. Together they form a unique fingerprint.

Cite this