| Project/Area Number |
16204022
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| Research Category |
Grant-in-Aid for Scientific Research (A)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Condensed matter physics II
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| Research Institution | The University of Tokyo |
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Principal Investigator |
UWATOKO Yoshiya The University of Tokyo, ISSP, Associate Professor (40213524)
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| Co-Investigator(Kenkyū-buntansha) |
ISHIMOTO Hidehiko The University of Tokyo, ISSP, Professor (60044773)
HEDO Masato The University of Ryukyus, College of Science, Associate Professor (00345232)
UMEHARA Izuru Yokohama National University, Faculty of Engneering, Associate Professor (90251769)
SHIGEOKA Toru Yamaguchi University, Scienee of Engineering, Professor (50167441)
MATSUBAYASHI Kazuyuki The University of Tokyo, ISSP, Assistant Professor (10451890)
藤原 直樹 京都大学, 大学院・人間環境研究科, 准教授 (60272530)
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| Project Period (FY) |
2004 – 2007
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| Project Status |
Completed (Fiscal Year 2007)
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| Budget Amount *help |
¥47,710,000 (Direct Cost: ¥36,700,000、Indirect Cost: ¥11,010,000)
Fiscal Year 2007: ¥7,280,000 (Direct Cost: ¥5,600,000、Indirect Cost: ¥1,680,000)
Fiscal Year 2006: ¥13,000,000 (Direct Cost: ¥10,000,000、Indirect Cost: ¥3,000,000)
Fiscal Year 2005: ¥13,000,000 (Direct Cost: ¥10,000,000、Indirect Cost: ¥3,000,000)
Fiscal Year 2004: ¥14,430,000 (Direct Cost: ¥11,100,000、Indirect Cost: ¥3,330,000)
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| Keywords | Cubic Anvil Cell / Diamond Anvil Cell / Piston Cylinder Cell / High Pressure Apparatus / Pressure Induced Phase Transition / Strong Correlated System / Heavy Fermion / Sunerconductor / 圧力効果 / 重い電子 / 超高圧力 / 圧力誘起超伝導 |
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| Research Abstract |
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.
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