Heterophasic oscillations in nanometer-size systems

Details Heterophasic oscillations in nanometer-size systems Heterophasic oscillations in nanometer-size systems

2008-05-14

arxiv.org/abs/0805.1955v1

Physics

Condensed Matter

Statistical Mechanics

21 pages, 3 figures

Scientific paper

10.1103/PhysRevE.78.041106

Singularities in macroscopic systems at discontinuous phase transitions are replaced in finite systems by sharp but continuous changes. Both the energy differences between metastable and stable phases and the energy barriers separating these phases decrease with decreasing particle number. Then, for small enough systems, random heterophasic oscillations of the entire system become an observable form of thermal motion. Under certain conditions, these oscillations take the form of oscillatory nucleation. We discuss mechanisms and observation conditions for these random transitions between phases.

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