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PGI-1 Seminar: Dr. Julen I. Azpiroz  

Spin-fluctuations in weak itinerant electron magnets: theory and planned realization within the KKR Green function approach

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16.Apr.2014 11:30
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PGI Lecture Hall

PGI-1/IAS-1, FZ-Jülich

Abstract:

There are systems in which DFT predicts a strong magnetism, but experiments measure weak magnetic properties. Examples include the compounds MnSi, ZrZn2, Sc3Ir, but also surfaces, thin films and 3d and 4d clusters. These systems are usually regarded as weak itinerant electron magnets, and the fluctuation of the spin is believed to play an important role in determining their magnetic properties. In the talk, the present theory of spin-fluctuations in weak itinerant electron magnets will be reviewed: the SCR theory by Moriya, the theory by Takahashi and modern approaches. Subsequently, a possible approach for computing the spin-fluctuations using the KKR Green function approach will be analyzed.

Contact

Prof. Dr. Stefan Blügel
Phone: +49 2461 61-4249
Fax: +49 2461 61-2850
email: s.bluegel@fz-juelich.de

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