Research of Solid State Physics in Ultra High Magnetic Fields

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The purpose of this project is to aim to discovery of new phenomena and development of new materials under collaborations by people who are working on high field science in Japan. The obtained results for the subjects which were proposed at the beginning of this project are as follows ; 1) 4f-5f electron systems : the understanding of metamagnetic transition observed in one of the heavy fermion system, CeRu2Si2, and research on quadrapole order phases caused by lattice distortions in CeB6 or Ce3Pd20Ge6.2) superlattice, electron control of low dimensional lattice materials : new information on diluted magnetic semiconductors in which Zeeman energy competes with the gap energy and exchange energy, on quantum wells which show strong light emission due to fluctuation of interfaces and on observation of cyclotron resonance in low dimensional organic conductors. 3) order-and disorder-lattice or spin systems : observation of new type of magnetization process on S=1 alternative bond materials, new phases observed by magnetic resonance on triangular lattice magnets and understanding of impurity state of spin Peierls material, CuGeO3. In addition, new results were obtained in material processing and optchemical reaction under high magnetic field. Technical development of new type superconducting magnet which uses no liquid Helium will contribute to high field science.