Critical wetting and surface-induced continuous phase transition on Cu3Au(001)期刊界 All Journals 搜尽天下杂志传播学术成果专业期刊搜索期刊信息化学术搜索

Critical wetting and surface-induced continuous phase transition on Cu3Au(001)

Authors:	S. F. Alvarado M. Campagna A. Fattah W. Uelhoff

Affiliation:	(1) Institut für Festkörperforschung der KFA Jülich, Jülich, Postfach 1913, D-5170, Federal Republic of Germany;(2) Present address: Zürich Research Laboratory, IBM Research Division, CH-8803 Rüschlikon, Switzerland

Abstract:	In the bulk Cu₃Au is known to undergo adiscontinuous order-disorder phase transition atT₀=663 K. Spin polarized low-energy-electron diffraction (SPLEED) reveals acontinuous surface-induced order-disorder phase transition-equivalent to a critical wetting transition—on the surface of Cu₃Au. The results indicate that nearT₀ the observed singularity is related to the surface order parameter which can be described by a functional dependence of the formt¹ with ¹=0.77±0.06.

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