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Synthesis of new superconductors via the co-intercalation of metal and organic molecules

Research Project

Project/Area Number 16K05429
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Condensed matter physics II
Research InstitutionTohoku University

Principal Investigator

NOJI Takashi  東北大学, 工学研究科, 助教 (50180740)

Project Period (FY) 2016-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2018: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2017: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2016: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Keywords超伝導 / インターカレーション / FeSe / 遷移金属ダイカルコゲナイド / FeSe超伝導体 / 超伝導材料
Outline of Final Research Achievements

We have succeeded in synthesizing a new intercalation compound with large interlayer spacing between neighboring Fe layers and the superconducting transition temperature Tc = 39 - 45 K via the co-intercalation of alkali metal and ethylenediamine or phenethylamine into FeSe with Tc = 8 K. We have concluded that the pairing mechanism in the FeSe-based superconductors is due to the spin fluctuation and the increase in Tc via the co-intercalation is attributed to the enhancement of the spin fluctuation on account of the improvement of the Fermi-surface nesting.
On the other hand, we have succeeded in synthesizing new superconductors via the co-intercalating Li or alkaline earth metal and organic molecules in transition metal dichalcogenide MoSe2 and TiSe2. We have concluded that the appearance of superconductivity in these materials is due to the increase of the electronic density of states at the Fermi level and the enhancement of the electron phonon interaction by the phonon-softening.

Academic Significance and Societal Importance of the Research Achievements

本研究は、層間に金属と有機分子をコインターカレート(共挿入)することにより、キャリア濃度と次元性を変化させた多くの新規超伝導体を合成し、その物性を調べたものである。その結果、超伝導発現機構がスピンの揺らぎであるFeSeは、二次元化によりフェルミ面のネスティングが向上し、超伝導転移温度Tcが大きく上昇した。また、電子格子相互作用が超伝導発現に寄与している遷移金属ダイカルコゲナイドでは、二次元化によるTcの上昇は小さく、キャリア濃度にTcは依存することが分かった。
このように、超伝導発現機構が異なる物質に対するコインターカレーション効果を調べた研究は皆無であり、学術的意義は大きいと考えている。

Report

(4 results)
  • 2018 Annual Research Report   Final Research Report ( PDF )
  • 2017 Research-status Report
  • 2016 Research-status Report
  • Research Products

    (26 results)

All 2019 2018 2017 2016

All Journal Article (6 results) (of which Peer Reviewed: 6 results,  Open Access: 6 results,  Acknowledgement Compliant: 1 results) Presentation (20 results) (of which Int'l Joint Research: 7 results)

  • [Journal Article] New Intercalation Superconductors Ax(C2H8N2)yMoSe2 (A = Ca, Sr, Ba) Synthesized by Solvothermal Method2018

    • Author(s)
      Sato Kazuki、Noji Takashi、Ueno Shota、Kawamata Takayuki、Kato Masatsune、Koike Yoji
    • Journal Title

      Journal of the Physical Society of Japan

      Volume: 87 Issue: 11 Pages: 113702-113702

    • DOI

      10.7566/jpsj.87.113702

    • NAID

      210000134996

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Superconductivity in Lithium- and Diamines-Intercalated TiSe2 and MoSe22018

    • Author(s)
      Sato K.、Noji T.、Hatakeda T.、Kawamata T.、Kato M.、Koike Y.
    • Journal Title

      Journal of Physics: Conference Series

      Volume: 969 Pages: 012077-012077

    • DOI

      10.1088/1742-6596/969/1/012077

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] New ethylenediamine-intercalated superconductor (C2H8N2) y Ta2PdSe6 with T c = 4.5 K2018

    • Author(s)
      Nakamura S.、Noji T.、Hatakeda T.、Sato K.、Kawamata T.、Kato M.、Koike Y.
    • Journal Title

      Journal of Physics: Conference Series

      Volume: 969 Pages: 012076-012076

    • DOI

      10.1088/1742-6596/969/1/012076

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] New Lithium- and Diamine-Intercalated Superconductors Lix(CnH2n+4N2)yMoSe2 (\(n = 2,6\))2018

    • Author(s)
      Sato Kazuki、Noji Takashi、Hatakeda Takehiro、Kawamata Takayuki、Kato Masatsune、Koike Yoji
    • Journal Title

      Journal of the Physical Society of Japan

      Volume: 87 Issue: 5 Pages: 054704-054704

    • DOI

      10.7566/jpsj.87.054704

    • NAID

      210000134822

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] New Lithium- and Diamines-Intercalated Superconductores Lix(C2H8N2)yTiSe2 and Lix(C6H16N2)yTiSe22017

    • Author(s)
      Kazuki Sato, Takashi Noji, Takehiro Hatakeda, Takayuki Kawamata, Masatsune Kato, and Yoji Koike
    • Journal Title

      Journal of the Physical Society of Japan

      Volume: 86 Issue: 10 Pages: 104701-104701

    • DOI

      10.7566/jpsj.86.104701

    • NAID

      210000134549

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] New Alkali-Metal- and 2-Phenethylamine-Intercalated Superconductors Ax(C8H11N)yFe1-zSe (A = Li, Na) with the Largest Interlayer-Spacings and Tc ~ 40 K2016

    • Author(s)
      Takehiro Hatakeda, Takashi Noji, Kazuki Sato, Takayuki Kawamata, Masatsune Kato, and Yoji Koike
    • Journal Title

      Journal of Physical Society of Japan

      Volume: 85 Issue: 10 Pages: 103702-103702

    • DOI

      10.7566/jpsj.85.103702

    • Related Report
      2016 Research-status Report
    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Presentation] Superconducting and normal state anisotropy of Fe(Te,Se) single crystals2019

    • Author(s)
      Y. Sun, H. Ohnuma, N. Mine, H. Kitano, S. Ayukawa, T. Noji, Y. Koike, and T. Tamegai
    • Organizer
      第74回日本物理学会年次大会
    • Related Report
      2018 Annual Research Report
  • [Presentation] 3d遷移金属カルコゲナイドCuCh (Ch = S, Se)への有機分子インターカレーション効果2018

    • Author(s)
      上野聖太、野地尚、佐藤和輝、横田和也、川股隆行、小池洋二、加藤雅恒
    • Organizer
      第73回応用物理学会東北支部学術講演会
    • Related Report
      2018 Annual Research Report
  • [Presentation] 水熱法を用いたFe(Se, S)の合成と超伝導特性2018

    • Author(s)
      横田和也、野地尚、佐藤和輝、川股隆行、小池洋二、加藤雅恒
    • Organizer
      第73回応用物理学会東北支部学術講演会
    • Related Report
      2018 Annual Research Report
  • [Presentation] Superconductivity in metal- and organic-molecule-intercalated transition-metal chalcogenides2018

    • Author(s)
      Y. Koike, T. Hatakeda, S. Hosono, K. Sato, S. Ueno, T. Noji, T. Kawamata, and M. Kato
    • Organizer
      4th International Conference on Functional Materials Science
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 高S濃度超伝導体FeSe1-xSx(0.5<x<1.0)の低温合成2018

    • Author(s)
      横田和也、野地尚、佐藤和輝、川股隆行、加藤雅恒、小池洋二
    • Organizer
      日本物理学会2018年秋季大会
    • Related Report
      2018 Annual Research Report
  • [Presentation] ソルボサーマル法による新規インターカレーション超伝導体の合成2018

    • Author(s)
      佐藤和輝、野地尚、上野聖太、川股隆行、加藤雅恒、小池洋二
    • Organizer
      日本物理学会2018年秋季大会
    • Related Report
      2018 Annual Research Report
  • [Presentation] Superconductivity in Alkali-Metal- and Organic-Molecule-Intercalated FeSe: Comparison with Single-Layer FeSe Films2018

    • Author(s)
      Y. Koike, T. Hatakeda, S. Hosono, T. Noji, K. Sato, T. Kawamata, and M. Kato
    • Organizer
      12th International Conference on Materials and Mechanisms of Superconductivity and High Temperature Superconductors
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Ta2PdSe6への金属と有機分子のコインターカレーションによる新規超伝導体の合成と超伝導特性2017

    • Author(s)
      中村慎一郎、野地尚、畑田武宏、佐藤和輝、川股隆行、加藤雅恒、小池洋二
    • Organizer
      日本物理学会
    • Place of Presentation
      大阪大学(大阪市)
    • Year and Date
      2017-03-17
    • Related Report
      2016 Research-status Report
  • [Presentation] Superconductivity in Lithium- and Diamines-Intercalated TiSe2 and MaSe22017

    • Author(s)
      Kazuki Sato, Takashi Noji, Takehiro Hatakeda, Takayuki Kawamata, Masatsune Kato, and Yoji Koike
    • Organizer
      28th International Conference on Low Temperature Physics
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] Superconductivity in alkali-metal- and organic-molecule-intercalated FeSe: Comparison with single-layer FeSe films2017

    • Author(s)
      Y. koike, T. Hatakeda, S. Hosono, T. Noji, K. Sato, T. Kawamata
    • Organizer
      28th International Conference on Low Temperature Physics
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] New Ethylenediamine-Intercalated Superconductor (C2H8N2)yTa2PdSe6 with Tc=4.5K2017

    • Author(s)
      Shin-icuiro Nakamura, Takashi Noji, Takehiro Hatakeda, Kazuki Sato, Takayuki Kawamata, Masatsune Kato, and Yoji Koike
    • Organizer
      28th International Conference on Low Temperature Physics
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] Superconductivity in alkali-metal- and organic-molecule-intercalated Transition-metal chalcogenides2017

    • Author(s)
      Y. koike, T. Hatakeda, S. Hosono, S. Nakamura, T. Noji, K. Sato, T. Kawamata, M. Kato
    • Organizer
      The European Materials Research Society (E-MRS) 2017 Fall Meeting
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] アルカリ金属と直鎖有機分子ジアミンのコインターカレーションによる新規TiSe2系超伝導体の合成とアニール効果2017

    • Author(s)
      佐藤和輝、野地尚、畑田武宏、川股隆行、加藤雅恒、小池洋二
    • Organizer
      第78回応用物理学会秋季学術講演会
    • Related Report
      2017 Research-status Report
  • [Presentation] Ta2PdSe6への金属と有機分子のインターカレーションによる超伝導2017

    • Author(s)
      中村慎一郎、野地尚、畑田武宏、佐藤和輝、川股隆行、加藤雅恒、高橋弘紀、木村尚次郎、淡路智、小池洋二
    • Organizer
      第72回応用物理学会東北支部学術講演会
    • Related Report
      2017 Research-status Report
  • [Presentation] Effects of the Co-intercalation of Lithium and Ethylenediamine into 1T-TaS2 and 2H-TaS22017

    • Author(s)
      Kazuki Sato, Shunsuke Hosaka,Takashi Noji, Takehiro Hatakeda, Takayuki Kawamata, Masatsune Kato, and Yoji Koike
    • Organizer
      30th International Symposium Superconductivity (ISS2017)
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] 新規インターカレーション超伝導体 Lix(C2H8N2)yTa2PdSe6の合成と超伝導特性2016

    • Author(s)
      中村慎一郎、野地尚、畑田武宏、佐藤和輝、川股隆行、加藤雅恒、小池洋二
    • Organizer
      応用物理学会東北支部学術講演会
    • Place of Presentation
      東北大学(仙台市)
    • Year and Date
      2016-12-01
    • Related Report
      2016 Research-status Report
  • [Presentation] 2H-TaS2に対するアルカリ金属と有機分子のコインターカレーションによる超伝導化2016

    • Author(s)
      保坂駿介、野地尚、畑田武宏、佐藤和輝、川股隆行、加藤雅恒、小池洋二
    • Organizer
      応用物理学会東北支部学術講演会
    • Place of Presentation
      東北大学(仙台市)
    • Year and Date
      2016-12-01
    • Related Report
      2016 Research-status Report
  • [Presentation] 金属と有機分子のコインターカレーションによる新規MoSe2系超伝導体の合成2016

    • Author(s)
      佐藤和輝、野地尚、畑田武宏、川股隆行、加藤雅恒、小池洋二
    • Organizer
      日本物理学会
    • Place of Presentation
      金沢大学(金沢市)
    • Year and Date
      2016-09-13
    • Related Report
      2016 Research-status Report
  • [Presentation] 環状基を有するインターカレーション超伝導体Ax(C8H11N)yFe1-zSe (A = Li, Na) の結晶構造とTcのキャリア濃度依存性2016

    • Author(s)
      畑田武宏、野地尚、佐藤和輝、川股隆行、加藤雅恒、小池洋二
    • Organizer
      日本物理学会
    • Place of Presentation
      金沢大学(金沢市)
    • Year and Date
      2016-09-13
    • Related Report
      2016 Research-status Report
  • [Presentation] FeSeへの電気化学的アルカリ金属インターカレーション効果2016

    • Author(s)
      梶田徹也、川股隆行、野地尚、畑田武宏、加藤雅恒、小池洋二、伊藤隆
    • Organizer
      応用物理学会
    • Place of Presentation
      朱鷺メッセ(新潟市)
    • Year and Date
      2016-09-13
    • Related Report
      2016 Research-status Report

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Published: 2016-04-21   Modified: 2020-03-30  

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