Continuous orientational ordering transition of carbon monoxide on graphite

Y. P. Feng, M. H.W. Chan

Research output: Contribution to journalArticlepeer-review

21 Scopus citations


In the compressed incommensurate phase at low temperatures, the molecular axes of CO on graphite are ordered with respect to each other, forming a pinwheel structure. A sharp heat capacity peak is found upon warming through the (orientational) order-disorder transition of this pin wheel phase. Critical analysis of the peak indicates that this transition is continuous and belongs to the two-dimensional Ising universality class, in agreement with theoretical expectations.

Original languageEnglish (US)
Pages (from-to)3822-3825
Number of pages4
JournalPhysical review letters
Issue number23
StatePublished - 1993

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)


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