Two-dimensional freezing in the liquid-vapor interface of a dilute Pb:Ga alloy.

Two-dimensional freezing in the liquid-vapor interface of a dilute Pb:Ga alloy. Research Abstract Details 

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Two-dimensional freezing in the liquid-vapor interface of a dilute Pb:Ga alloy. Abstract Text:

B Yang,D Gidalevitz,D Li,Z Huang,S A Rice,

We report the results of x-ray reflectivity and grazing incidence x-ray diffraction studies of the liquid-vapor interface of a dilute alloy of Pb in Ga over the temperature range of 23-76 degrees C. Our data show that the liquid-vapor interface of this alloy is stratified for several atomic diameters into the bulk liquid and that a monolayer of Pb forms the outermost stratum of the interface. Over the temperature range of 23-56 degrees C, the monolayer of Pb is in an ordered hexagonal phase. At about 58 degrees C, this monolayer undergoes a first-order transition to a hexatic phase, which remains stable to 76 degrees C. An analogy between the observed transition and the first-order melting transition in a one-component classical plasma is suggested.

Two-dimensional freezing in the liquid-vapor interface of a dilute Pb:Ga alloy. Publishing Authors By Initials

B Yang,D Gidalevitz,D Li,Z Huang,SA Rice,

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Two-dimensional freezing in the liquid-vapor interface of a dilute Pb:Ga alloy. Journal Published:

PUBLICATION TYPE: Journal Article

Journal: Proceedings of the National Academy of Sciences of

VOLUME: 96

Page Numbers: 13009-11

Journal Abbreviation: Proc. Natl. Acad. Sci. U.S.A.

ISSN: 0027-8424

DAY: 9

MONTH: Nov

YEAR: 1999

Two-dimensional freezing in the liquid-vapor interface of a dilute Pb:Ga alloy. Information

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LANGUAGE: eng

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Grant and Affiliation Information for Two-dimensional freezing in the liquid-vapor interface of a dilute Pb:Ga alloy.

AFFILIATION: Department of Chemistry and The James Franck Institute, The University of Chicago, Chicago, IL 60637, USA.

Country: United States

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MEDLINETA: Proc Natl Acad Sci U S A

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