Photoemission investigation of the initial growth mode of Cr on Ag(100)

Ultra-thin Cr films (⩽ 12 monolayers (ML) on Ag(100)) have been studied by low energy electron diffraction (LEED) and angle-resolved photoemission spectroscopy. The data show that for substrates at room temperature, Cr agglomeration occurs even at coverages as low as 0.5 ML. In particular, this is u...

Full description

Saved in:
Bibliographic Details
Published in:Vacuum 1990, Vol.41 (1), p.460-463
Main Authors: Krembel, C, Hanf, M.C., Wetzel, P, Pirri, C, Peruchetti, J.C., Bolmont, D, Gewinner, G
Format: Article
Language:English
Subjects:
Applied sciences
Cross-disciplinary physics: materials science
rheology
Exact sciences and technology
Growth from vapor
Materials science
Metals. Metallurgy
Methods of crystal growth
physics of crystal growth
Physics
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Ultra-thin Cr films (⩽ 12 monolayers (ML) on Ag(100)) have been studied by low energy electron diffraction (LEED) and angle-resolved photoemission spectroscopy. The data show that for substrates at room temperature, Cr agglomeration occurs even at coverages as low as 0.5 ML. In particular, this is unambiguously demonstrated by a careful study of the Ag(100) M̄ 3 surface state intensity, which is proportional to the bare Ag(100) surface area, as a function of Cr coverage, It is found that, at room temperature, about 2.5 ML of Cr must be deposited in order to quench completely the Ag surface state. Valence band photoemission data clearly indicate that epitaxial growth of bcc Cr does take place in the form of islands exposing (100) surfaces. However, both photoemission and LEED show that Cr(100) surfaces prepared in this way, exhibit an important degree of disorder.
ISSN:0042-207X
1879-2715
DOI:10.1016/S0042-207X(05)80151-4