Order-disorder transition for corrugated Au layers

Keisuke Fukutani, N. Lozova, S. M. Zuber, P. A. Dowben, P. Galiy, Yaroslav B. Losovyj

Research output: Contribution to journalArticlepeer-review

10 Citations (Scopus)


Atomic-scale structure of the growth of a gold film on (1 1 2) plane of Mo single crystal was investigated by means of low energy electron diffraction (LEED) and scanning tunneling microscopy (STM) up to two monolayers (ML) of gold coverage. Both LEED and STM results establish that Au grows on Mo(1 1 2) in a layer-by-layer mode, for at least the first two monolayers. A number of ordered structures are formed and both the first and second layers adopt the Mo(1 1 2) 1 × 1 surface structure upon completion. For some gold layers on Mo(1 1 2), notably the 1.66 monolayer 3 × 1 and 1.75 monolayer 4 × 1 gold overlayers, we find evidence of a phase transition associated with increasing disorder in gold layers with structural corrugation and anisotropic band structure. The signature of this phase transition, at temperatures in the range of 400-500 K, is a sharp decrease in the overlayer effective Debye temperature.

Original languageEnglish
Pages (from-to)4796-4800
Number of pages5
JournalApplied Surface Science
Issue number15
Publication statusPublished - 2010 May 15


  • Debye temperature
  • Electron-phonon coupling
  • Gold overlayers
  • Phase transitions

ASJC Scopus subject areas

  • Chemistry(all)
  • Condensed Matter Physics
  • Physics and Astronomy(all)
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films


Dive into the research topics of 'Order-disorder transition for corrugated Au layers'. Together they form a unique fingerprint.

Cite this