| Project/Area Number |
22244039
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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 | High Energy Accelerator Research Organization (2012-2013)
Tohoku University (2010-2011) |
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Principal Investigator |
YAMADA Kazuyoshi 大学共同利用機関法人高エネルギー加速器研究機構, 物質構造科学研究所, 所長 (70133923)
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| Co-Investigator(Kenkyū-buntansha) |
FUJITA Masaki 東北大学, 金属材料研究所, 教授 (20303894)
OHOYAMA Kenji 東北大学, 金属材料研究所, 准教授 (60241569)
WATANABE Takao 弘前大学, 理工学研究科, 教授 (40431431)
TOMIYASU Keisuke 東北大学, 大学院理学研究科, 助教 (20350481)
HIRAKA Haruhiro 東北大学, 東北大学, 助教 (90323097)
MATSUURA Masato 東北大, 金属材料研究所, 助教 (30376652)
SATO Toyoto 東北大学, 金属材料研究所, 助教 (20455851)
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| Co-Investigator(Renkei-kenkyūsha) |
YAMAGUCHI Yasuo 東北大学, 金属材料研究所, 産学官連携研究員 (80005917)
ARAI Masatoshi (独)日本原子力研究開発機構, J-PARC センター, 研究主席 (30175955)
SHISHIDO Touetsu 東北大学, 金属材料研究所, 准教授 (50125580)
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| Project Period (FY) |
2010-04-01 – 2014-03-31
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| Project Status |
Completed (Fiscal Year 2013)
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| Budget Amount *help |
¥45,110,000 (Direct Cost: ¥34,700,000、Indirect Cost: ¥10,410,000)
Fiscal Year 2013: ¥7,410,000 (Direct Cost: ¥5,700,000、Indirect Cost: ¥1,710,000)
Fiscal Year 2012: ¥7,410,000 (Direct Cost: ¥5,700,000、Indirect Cost: ¥1,710,000)
Fiscal Year 2011: ¥11,570,000 (Direct Cost: ¥8,900,000、Indirect Cost: ¥2,670,000)
Fiscal Year 2010: ¥18,720,000 (Direct Cost: ¥14,400,000、Indirect Cost: ¥4,320,000)
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| Keywords | 中性子散乱 / 高温超伝導 / 反強磁性 / 擬キャップ / X線散乱 / 金属磁性 / 大型単結晶 / 偏極中性子 / 擬ギャップ |
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| Research Abstract |
Combination of neutron scattering and large crystal-growth techniques obtained new and important results on the relation between magnetism and electric conductivity for metallic magnets including superconductors.
(1)The magnetic-superconducting phase diagram was comprehensively studied for cuprate superconductors by neutron scattering and X-ray scattering. As a result, we succeeded in discriminating common and material-dependent features of the phase diagram, which provide key information towards higher superconducting transition temperature.We proposed a simple model to describe qualitatively the unique and common magnetic excitation of metallic magnets which cannot be understood by a conventional spin-wave model.
(2)High quality large single crystal of Cu2MnAl was reproducibly obtained and vertically focused neutron polarizer was constructed for the first time in Japan.
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