[en] We report on the crystal structure and electronic bands of LaAu2 and CeAu2 surface intermetallic compounds grown by high-temperature deposition on Au(111). By scanning-tunneling microscopy we study the formation of different alloy phases as a function of growth temperature and lanthanide coverage. We determine the specific growth conditions to achieve monolayers and bilayers of LaAu2 and CeAu2 with high crystalline quality. Due to lattice mismatch with the underlying Au substrate, both LaAu2 and CeAu2 exhibit long-range moire ́ patterns, which can serve as templates for further nanostructure growth. By angle-resolved photoemission we map the two-dimensional band structure of these surface alloys, discussing the nature of the different spectral features in the light of first-principles calculations.
Disciplines :
Physics
Author, co-author :
Ormaza, M.
Fernandez, L.
Lafuente, S.
Corso, M.
Schiller, F.
Xu, Bin ; Université de Liège - ULiège > Département de physique > Physique des matériaux et nanostructures
Diakhate, Momar ; Université de Liège - ULiège > Département de physique > Physique des matériaux et nanostructures
Verstraete, Matthieu ; Université de Liège - ULiège > Département de physique > Physique des matériaux et nanostructures
Ortega, J. E.
Language :
English
Title :
LaAu2 and CeAu2 surface intermetallic compounds grown by high-temperature deposition on Au(111)
Publication date :
2013
Journal title :
Physical Review. B, Condensed Matter and Materials Physics
ISSN :
1098-0121
eISSN :
1550-235X
Publisher :
American Physical Society, Woodbury, United States - New York
Volume :
88
Pages :
125405
Peer reviewed :
Peer Reviewed verified by ORBi
Tags :
CÉCI : Consortium des Équipements de Calcul Intensif
Funders :
CÉCI - Consortium des Équipements de Calcul Intensif [BE]
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