Au(110)(1×2)-to-(1×1) phase transition: a physical realization of the two-dimensional Ising model

Au(110)(1×2)-to-(1×1) phase transition: a physical realization of the two-dimensional Ising model

The first measurements of the critical exponents of a phase transition at the surface of a clean metal, the Au(110) (1 x 2) < - > (1 x 1) transition are reported. The exponents beta , gamma , and nu and the amplitudes were measured by LEED and place the phase transition in the two-dimensional...

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Veröffentlicht in:Physical review letters 1985-06, Vol.54 (25), p.2684-2687
Hauptverfasser: CAMPUZANO, J. C, FOSTER, M. S, JENNINGS, G, WILLIS, R. F, UNERTL, W
Format: Artikel
Sprache:eng
Schlagworte:
Condensed matter: structure, mechanical and thermal properties
Cross-disciplinary physics: materials science
rheology
Exact sciences and technology
Materials science
Metals, semimetals and alloys
Physics
Solid surfaces and solid-solid interfaces
Specific materials
Surface structure and topography
Surfaces and interfaces
thin films and whiskers (structure and nonelectronic properties)
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Zusammenfassung:The first measurements of the critical exponents of a phase transition at the surface of a clean metal, the Au(110) (1 x 2) < - > (1 x 1) transition are reported. The exponents beta , gamma , and nu and the amplitudes were measured by LEED and place the phase transition in the two-dimensional Ising universality class. The critical scattering is observed to peak above T sub c , signaling the breakdown of the Ornstein--Zernike theory, and is in numerical accord with predictions of Fisher and Burford. 15 ref.--AA
ISSN:0031-9007
1079-7114
DOI:10.1103/physrevlett.54.2684