Journal Article

FZJ-2018-02824

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Localized segregation of gold in ultrathin Fe films on Au(001)

Gospodaric, P.FZJ* ; Młyńczak, E. (Corresponding author) ; Eschbach, M. ; Gehlmann, M. ; Zamborlini, G.FZJ* ; Feyer, V.FZJ* ; Plucinski, L.FZJ* ; Schneider, C. M.FZJ*

2018
Inst. Woodbury, NY

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Please use a persistent id in citations: http://hdl.handle.net/2128/20943  doi:10.1103/PhysRevB.97.085409

Abstract: The growth of up to ten-monolayer-thick Fe films on a Au(001) surface was investigated during depositionat room temperature and during annealing, using low-energy electron diffraction and x-ray photoemissionspectroscopy, as well as locally with low-energy electron microscopy and photoemission electron microscopy.The growth proceeds with a submonolayer of Au segregating on the surface of Fe, which is in agreement withprevious studies. Annealing was found to be critical for the presence of Au on the Fe surface. Our study identifiesa spatially inhomogeneous Au segregation mechanism which proceeds by the formation of cracks in the Fe film,starting at the annealing temperature of 190 °C, through which Au diffuses towards the surface. As a result, asystem with a nonuniform surface electronic structure is obtained. This study shows the necessity to employspatially resolved techniques to fully understand the growth modes of the layered epitaxial systems.

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Contributing Institute(s):

1. Elektronische Eigenschaften (PGI-6)

Research Program(s):

1. 522 - Controlling Spin-Based Phenomena (POF3-522) (POF3-522)

Appears in the scientific report 2018

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Database coverage:
; ; ; Current Contents - Physical, Chemical and Earth Sciences ; Ebsco Academic Search ; IF < 5 ; JCR ; SCOPUS ; Science Citation Index ; Science Citation Index Expanded ; Thomson Reuters Master Journal List ; Web of Science Core Collection

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