Development of high pressure cell and study of pressure on the strong correlated system

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The combination of low temperature, high pressure and magnetic field provides a powerful means to access abroad range of energy scales and thus study physical phenomena such as metal-insulator transitions, pressure induced superconductivity and the evolution of the Fermi surface as a material is driven into the superconducting state. We have been studying to understanding of a new phenomenon to occur under going interplay (and/or competition) between magnetism and superconductivity and pressure induced novel phase transitions etc.A micro high pressure cell and a cubic anvil high pressure cell have been developed ix measurements of specific heat, magnetization and electrical resistivity at low temperature, respectively. This small cell device can be used up to 2 GPa. And, cubic anvil high pressure cell can be used up to 8GPa at 0.57K.We discover that the one-dimensional organic conductor (TMTTF)_2XF_6(X=Sb, As), ZrTe_3 and YbCo_2Zn_20 are pressure induced superconductor; pressure induced reentrant superconductor and pressure induced magnetic compound, respectively.