TY  - JOUR
AU  - Gospodaric, Pika
AU  - Młyńczak, E.
AU  - Eschbach, Markus
AU  - Gehlmann, Mathias
AU  - Zamborlini, Giovanni
AU  - Feyer, Vitaliy
AU  - Plucinski, Lukasz
AU  - Schneider, Claus Michael
TI  - Localized segregation of gold in ultrathin Fe films on Au(001)
JO  - Physical review / B
VL  - 97
IS  - 8
SN  - 2469-9950
CY  - Woodbury, NY
PB  - Inst.
M1  - FZJ-2018-02824
SP  - 085409
PY  - 2018
AB  - 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.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000424502700004
DO  - DOI:10.1103/PhysRevB.97.085409
UR  - https://juser.fz-juelich.de/record/845605
ER  -