Helium scattering study of the growth mechanism and phase transitions of Pb overlayers on Cu(100)

Journal Article · Sun Feb 01 04:00:00 EST 1987 · J. Appl. Phys.; (United States)

DOI:https://doi.org/10.1063/1.338126· OSTI ID:6726810

Sanchez, A; Ibanez, J; Miranda, R; Ferrer, S

We present the first results of thermal energy He scattering by an heteroepitaxial system, namely Pb on Cu(100). The intensity of the specularly reflected He beam as a function of the coverage of Pb is sensitive to disordered adsorption, to the ordering of the overlayer, and to three-dimensional cluster growth. Quantitative information, such as the number of random vacancies in the as-deposited monolayer, can be obtained. The large differences in the cross sections for diffuse scattering between Pb adatoms on the Cu terraces and on the steps have been used to determine the heat of two-dimensional vaporization of Pb atoms from step to terrace sites.

• Research Organization: Departamento de Fisica Fundamental C-III, Universidad Autonoma de Madrid, Cantoblanco, 28049-Madrid, Spain
• OSTI ID: 6726810
• Journal Information: J. Appl. Phys.; (United States), Journal Name: J. Appl. Phys.; (United States) Vol. 61:3; ISSN JAPIA
• Country of Publication: United States
• Language: English

Related Subjects

656002* -- Condensed Matter Physics-- General Techniques in Condensed Matter-- (1987-)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ATOM COLLISIONS
COLLISIONS
COPPER
CRYSTAL DEFECTS
CRYSTAL GROWTH
CRYSTAL STRUCTURE
ELEMENTS
EPITAXY
FLUIDS
GASES
HELIUM
LAYERS
LEAD
METALS
NONMETALS
POINT DEFECTS
RARE GASES
SCATTERING
SORPTIVE PROPERTIES
SURFACE PROPERTIES
TRANSITION ELEMENTS
VACANCIES