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SFB 668:  Magnetism from the Single Atom to the Nanostructure

Subject Area Physics
Chemistry
Term from 2006 to 2017
Project identifier Deutsche Forschungsgemeinschaft (DFG) - Project number 13002249
 
Magnetism is one of the longest known phenomena in condensed matter and has fascinated mankind since millennia. Technological applications - like the compass needle - have already been known for centuries. This makes it even more astonishing that magnetism recently has again become one of the most intensely investigated fields in solid state research. On the one hand, this is closely connected with advanced experimental fabrication, synthesis and characterisation, as well as theoretical approaches to nanoscale magnetic systems. This includes investigations down to single atoms allowing for fundamental studies on a length scale, which was not accessible before. On the other hand, new questions arise from the ongoing miniaturisation in data storage technology: e.g. the smallest possible unit, which still shows a stable magnetisation direction over time and can thus in principle be used for magnetic data storage; or the question regarding the shortest pulse needed for magnetisation reversal in nanoscale magnetic systems defining the fastest possible writing process of magnetic information.
The aim of the Collaborative Research Centre is to contribute to a fundamental understanding of the static and dynamic behaviour of atoms, molecules, clusters, nanoparticles, nanowires and laterally structured nanosystems in contact with surfaces. This will facilitate the long-term goal of a direct control of magnetic properties down to the atomic scale and the single spin. At the same time this would serve as a foundation for new generations of magnetic data storage media, possibly one thousand times more powerful than current mass storage devices. On the way to this visionary goal many fundamental problems will have to be solved, such as the influence of different parameters on the type of magnetic coupling (ferro- or antiferromagnetic), e.g. the bond length between atoms as well as to the substrate, or the formation and stability of a preferred magnetic orientation. Equally important is the investigation of fundamental questions concerning the transport of electrons in interaction with nanoscale magnetic systems, and the study of the dynamic behaviour of nanoscale magnetic systems with the highest possible time resolution.
DFG Programme Collaborative Research Centres
International Connection Netherlands

Completed projects

Applicant Institution Universität Hamburg
Participating University Christian-Albrechts-Universität zu Kiel
 
 

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