Pressure-induced Superconductivity in Elemental Materials
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概要
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Both experimental and theoretical approaches in our search for superconductivity under pressure are reviewed. We have developed a double extreme condition of very low-temperature down to 50mK using a ^3He/^4He dilution refrigerator and ultrahigh pressure up to 200GPa using a diamond-anvil cell (DAC). Experimental techniques producing ultrahigh pressure as well as measuring electrical resistance, magnetization and optical response are developed especially for studying the pressure-induced superconductivity of simple systems such as elemental materials. The details of these techniques are described in §1. In §2, we review several examples of pressure-induced superconductivity observed for the first time by our group. Comparisons between experimental results and theories based on the first principles band calculations are given in §3. Finally, we point out remaining problems to be solved in further studies in the search for pressure-induced superconductivity.
- 社団法人日本物理学会の論文
- 2005-05-15
著者
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SUZUKI Naoshi
Department of Material Physics,Faculty of Engineering Science,Osaka University
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SHIMIZU Katsuya
KYOKUGEN, Research Center for Materials Science at Extreme Conditions, Osaka University
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Amaya Kiichi
Toyota Physical And Chemical Research Institute:shock Wave And Condensed Matter Research Center Kuma
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Suzuki Naoshi
Graduate School Of Engineering Science Osaka University
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Shimizu Katsuya
Kyokugen Center For Quantum Science And Technology Under Extreme Conditions Osaka University
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Suzuki Naoshi
Department Of Material Phsics Faculty Of Engineering Science Osaka University
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AMAYA Kiichi
Toyota Physical and Chemical Research Institute:Shock Wave and Condensed Matter Research Center, Kumamoto University
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SUZUKI Naoshi
Department of Physical Science, Graduate School of Engineering Science, Osaka University
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