Low-density crystals in charged colloids: Comparison with Yukawa theory

I. Rios de Anda, A. Statt, F. Turci, C. P. Royall

Research output: Contribution to journalArticle

Abstract

Charged colloids can behave as Yukawa systems, with similar phase behaviour. Using particle-resolved studies, we consider a system with an unusually long Debye screening length which forms crystals at low colloid volume fraction ϕ ≈ 0.01. We quantitatively compare this system with the Yukawa model and find that its freezing point is compatible with the theoretical prediction but that the crystal polymorph is not always that expected. In particular we find body-centred cubic crystals where face-centred cubic crystals are expected.

Original languageEnglish (US)
Pages (from-to)172-179
Number of pages8
JournalContributions to Plasma Physics
Volume55
Issue number2-3
DOIs
StatePublished - Feb 1 2015
Externally publishedYes

Keywords

  • Colloids
  • Yukawa model

ASJC Scopus subject areas

  • Condensed Matter Physics

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