Ab initio investigations of magnetic properties of ultrathin transition-metal films on 4d substrates [Elektronische Ressource] / vorgelegt von Ali Al-Zubi

Ab initio investigations of magnetic properties ofultrathin transition-metal lms on 4d substratesVon der Fakult at fur Mathematik, Informatik und Naturwissenschaften der RWTHAachen University zur Erlangung des akademischen Grades eines Doktors derNaturwissenschaften genehmigte Dissertationvorgelegt vonMaster of ScienceAli Al-Zubiaus Al-Ramtha (Jordanien)Berichter: Universit atsprofessor Dr. Stefan Bluge lUniversit Dr. Peter Heinz DederichsTag der mundlic hen Prufung: 27.05.2010Diese Dissertation ist auf den Internetseiten der Hochschulbibliothek online verfugbarAbstractIn this thesis, we investigate the magnetic properties of 3d transition-metal monolayers on4d transition-metal substrates by means of state of the art rst-principles quantum theory.In contrast to previous investigations on noble metal substrates, the strong hybridizationbetween 3d metals and the substrate is an additional parameter determining the properties.In order to reveal the underlying physics of these systems we study trends by performingsystematic investigations across the transition-metal series. Case studies are presentedfor which Rh has been chosen as exemplary 4d substrate. We consider two substrateorientations, a square lattice provided by Rh(001) and a hexagonal lattice provided byRh(111).