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Motivation


 



Schematics of a spin light emitting diode


Modern information technology is based on semiconductors and ferromagnetic materials. Information is processed in semiconductor transistors and integrated circuits while information is stored magnetically on high density hard disk drives. Spin electronics is a rapidly evolving research field, which aims to combine ferromagnets with semiconductors to develop spintronic devices that exploit the quantum mechanical 'spin' of electrons as well as their 'charge'. One goal is to integrate information processing with information storage. A broader goal is to develop new functionality that does not exist in a ferromagnet or in a semiconductor separately. In a long term perspective spin electronic devices might even be used for future quantum information processing.

A crucial requirement for spintronic devices is the electrical spin injection into a semiconductor. Here, diluted magnetic semiconductors, e.g. GaMnAs, or lattice matched metallic ferromagnetic layers are promising candidates. Another important aspect concerning the realization of spinelectronic structures are the spin lifetime and the possibility of spin manipulation.

The Virtual Institute of Spin Electronics (VISel) is devoted to explore both the technological and fundamental physical basics which help to establish design rules for spintronic devices based on GaN and its related ternary compounds. The research in spintronics has merged from more or less independent areas of solid state physics, i.e. semiconductor physics and magnetism. The complex physical and technological tasks can only be addressed and solved in a combined effort and close collaboration of research groups with complementary competence and resources in semiconductor physics as well as in magnetism. The research groups participating in the Virtual Institute have long standing expertise in all aspects of the required tasks.


Copyright   Forschungszentrum Jülich
D-52425 Jülich

RWTH Aachen
Uni Göttingen

 

Contact Imprint 12.12.2012
 VISel