Search for novel itinerant-electron transition metal compounds with low dimensionality and frustration effects and their syntheses and anomalous physical properties
| Project/Area Number |
16H04131
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Functional solid state chemistry
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| Research Institution | Kyoto University |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
植田 浩明 京都大学, 理学研究科, 准教授 (10373276)
道岡 千城 京都大学, 理学研究科, 助教 (70378595)
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| Research Collaborator |
Kindo Koichi
Sakai Toru
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| Project Period (FY) |
2016-04-01 – 2019-03-31
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| Project Status |
Completed (Fiscal Year 2018)
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| Budget Amount *help |
¥17,940,000 (Direct Cost: ¥13,800,000、Indirect Cost: ¥4,140,000)
Fiscal Year 2018: ¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2017: ¥5,460,000 (Direct Cost: ¥4,200,000、Indirect Cost: ¥1,260,000)
Fiscal Year 2016: ¥7,670,000 (Direct Cost: ¥5,900,000、Indirect Cost: ¥1,770,000)
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| Keywords | 遍歴電子磁性 / 二次元遍歴電子系 / エキゾチック超伝導 / フラストレーション効果 / 核磁気共鳴 / 遷移金属化合物 / 遍歴電子物性 / 磁性 / 超伝導 / 電子・電気材料 |
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| Outline of Final Research Achievements |
With a combination of frustrate effect and low dimensionality of layered structure, we have performed systematic searches and syntheses of new itinerant-electron transition-metal systems which may show remarkable novel itinerant electron properties, then have performed basic researches in the research field of inorganic solid-state chemistry in order to elucidate their physical and chemical properties both from macroscopic and microscopic view points. As for obtained 2-dimentional itinerant-electron magnetic systems, we have analyzed the systematic data measured mainly by using high-power NMR apparatus in terms of spin-fluctuation theory. In the case of obtained exotic superconductors, the correlation between superconducting transition temperature Tc and characteristic temperature of spin-fluctuation energy, T0 has been invested and established the linear relation between them, These results may lead to the unified picture of itinerant-electron systems.
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| Academic Significance and Societal Importance of the Research Achievements |
本研究によって、申請者らがこれまで世界に先駆けて発見・合成してきた様々な遷移金属化合物群をベースとして、新規低次元・フラストレート遍歴化合物群を創生し、電子相関やスピンゆらぎを制御して、新たな遍歴電子磁性体や超伝導体を構築・創生することに成功してきた。122型CoP二次元遍歴強磁性体系、籠型A3T4Sn13超伝導体、三角格子金属クラスター物質などがその典型例である。更にそれらの新たな電子物性について、スピンゆらぎに基づく遍歴電子理論によって統一的に理解することに成功している。従って本研究は、無機物性化学を含む物性科学において学術的に高い意味をもち、国内・外への波及効果が大であると言える。
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Report
(4 results)
Research Products
(89 results)
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[Journal Article] Occupation sites and valence states of Co dopants in (La, Co)-codoped M-type Sr ferrite: 57Fe and 59Co nuclear magnetic resonance studies2018
Author(s)
H. Sakai,* T. Hattori, Y. Tokunaga, and S. Kambe, H. Ueda, Y. Tanioku, C. Michioka, and K. Yoshimura, K. Takao, A. Shimoda, T. Waki, Y. Tabata, and H. Nakamura
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Journal Title
Phys. Rev. B
Volume: 98
Issue: 6
Pages: 064403-064403
DOI
Related Report
Peer Reviewed / Open Access
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[Journal Article] Arrott plots, M4 plots and the critical temperature of the weak ferromagnet FeGa3-yGey2018
Author(s)
Yao Zhang, Yoshinori Takahashi, Masaki Imai, Guohua Wang, Marcos A. Avila, Toshiro Takabatake, Chishiro Michioka, Hiroaki Ueda, Kazuyoshi Yoshimura, Jie Ma
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Journal Title
AIP Advances
Volume: 8
Issue: 10
DOI
Related Report
Peer Reviewed / Open Access / Int'l Joint Research
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[Journal Article] Ising-like anisotropy stabilized 1/3 and 2/3 magnetization plateaus in the V3+ kagome lattice antiferromagnets Cs2KV3F12, Cs2NaV3F12, and Rb2NaV3F122017
Author(s)
Masato Goto, Hiroaki Ueda, Chishiro Michioka, Akira Matsuo, Koichi Kindo, Kento Sugawara, Shintaro Kobayashi, Naoyuki Katayama, Hiroshi Sawa, and Kazuyoshi Yoshimura
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Journal Title
Phys. Rev. B
Volume: 95
Issue: 13
DOI
Related Report
Peer Reviewed / Open Access
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[Journal Article] Experimental determination of the Fermi surface of Sr3Ir4Sn132016
Author(s)
Xiaoye Chen, Swee K. Goh, David A. Tompsett, Wing Chi Yu, Lina Klintberg, Sven Friedemann, Hong’En Tan, Jinhu Yang, Bin Chen, M. Imai, Kazuyoshi Yoshimura, Monika B. Gamza, F. Malte Grosche, and Michael L. Sutherland
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Journal Title
Phys. Rev. B
Volume: 93
Issue: 23
DOI
Related Report
Peer Reviewed / Open Access / Int'l Joint Research
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[Journal Article] Second-order structural transition in the superconductor La3Co4Sn132016
Author(s)
Y. W. Cheung, J. Z. Zhang, J. Y. Zhu, W. C. Yu, Y. J. Hu, D. G. Wang, Y. Otomo, K. Iwasa, K. Kaneko, M. Imai, H. Kanagawa, K. Yoshimura, S. K. Goh
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Journal Title
Phys. Rev. B
Volume: 93
Issue: 24
DOI
Related Report
Peer Reviewed / Open Access / Int'l Joint Research
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[Presentation] S=1/2カゴメ格子反強磁性体Cs2ATi3F12(A+= Li+, Na+, K+, Rb+, Cs+, NH4+)の構造歪みと物性2018
Author(s)
白上龍, 後藤真人A, 植田浩明, 小林慎太郎, 菅原健人, 片山尚幸, 澤博, 松尾晶, 金道浩一, 道岡千城, 吉村一良
Organizer
日本物理学会春期大会（東京理科大学）
Related Report
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[Presentation] カゴメ弗化物A2BM3F12（A, B: アルカリ金属, M: 3d遷移金属）の構造物性研究2017
Author(s)
小林慎太郎, 菅原健人, 後藤真人, 白上龍, 道岡千城, 植田浩明, 吉村一良, 片山尚幸, 澤博
Organizer
日本物理学会秋期大会（岩手大学）
Related Report
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[Presentation] YbT6Ge6(T=Cr, Mn, Co)の単結晶育成とTに依存す るYb由来の磁性2017
Author(s)
引地将仁, 勝間勇人, 道岡千城, 植田浩明, 松尾晶, 金 道浩一, 辻井直人, 山岡人志, 吉村一良
Organizer
日本物理学会秋期大会（岩手大学）
Related Report
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