Abstract

We have developed complex extreme condition of very low temperature down to 30 mK and very high pressure exceeding 200 GPa by assembling compact diamond anvil cell (DAC) on a powerful 3He/ 4He dilution refrigerator. Using the apparatus and techniques, we have searched for pressure-induced superconductivity in various materials under pressures. In this paper, our experimental techniques and the examples of pressure-induced superconductivity in Li and Fe are reviewed.

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