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{\Large \bf Microscopic Research on Magnetism Group}\\
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Professor          &:&Hideya~Onodera\\
Associate Professor&:&Shigeru~Takagi\\
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(http://www.nhpm.phys.tohoku.ac.jp/)

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Highly correlated electron systems in 5f-, 4f- and 3d-compounds 
as well as low-dimensional organic compounds show various interesting 
physical properties such as metal-insulator transition, valence 
fluctuation, heavy-electron behavior, multipolar ordering and 
low-dimensional quantum spin behavior.

We are exploring new target compounds and preparing high-quality 
samples by ourselves. In addition to various measurements on magnetic 
properties by basic methods, we are investigating these systems mainly 
through microscopic methods of Nuclear Magnetic Resonance (NMR) and 
M{\"o}ssbauer spectroscopies. Generally in solids, nuclear magnetic 
moments are coupled to the electronic spin with modest strength, 
and this modestness makes these methods very powerful microscopic 
tools to probe the electronic states of the highly correlated electron 
systems. We are also performing neutron scattering experiments in 
order to study the magnetic structures and magnetic excitation behavior. 
High pressure is also very powerful in the study of these systems, 
because it can tune 
continuously and without disturbing the periodicity of the lattice the 
underlying delicate balance between itinerancy and localization in 
these systems. The combination of some of these methods can be 
quite powerful, and this has been constituting a frontier of our recent 
research. 



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