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Synthesis of new superconductors by the solvothermal method

Research Project

Project/Area Number 19K05241
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 29010:Applied physical properties-related
Research InstitutionTohoku University

Principal Investigator

NOJI Takashi  東北大学, 工学研究科, シニア研究員 (50180740)

Project Period (FY) 2019-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2021: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2020: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2019: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Keywords超伝導 / コインターカレーション / インターカレーション / ソルボサーマル法
Outline of Research at the Start

コインターカレーションとは、金属と有機分子を、層状物質の層間に同時にインターカレート(共挿入)する手法である。このコインターカレーションで用いられる有機分子はアンモニアであったが、我々は直鎖系有機分子を挿入することに成功した。これにより、層間長(次元性)とキャリア濃度を同時に制御できることから、新規超伝導体合成手法として有望と考えて実験を行っている。本研究は、この手法をFeSeやPdX2 (X = Se, Te)の多くの層状物質に施し、新規超伝導体を合成し、種々の特性を測定するものである

Outline of Final Research Achievements

We have succeeded in synthesizing various new intercalation superconductors via the co-intercalation into the iron-based superconductor FeSe and the transition metal dichalcogenides WTe2, MoTe2 and SnSe2.
We have been synthesized via the co-intercalation of linear monoamines of octadecylamine together with Li into FeSe. The distance between neighboring Fe layers expands up to 55.7 Å which is much larger than the previous record of 19 Å in the FeSe-based intercalation superconducting compounds. On the other hand, we have successfully synthesized new superconductors with superconducting transition temperature Tc = 3.8 - 5.6 K through the co-intercalation of Li and ethyienediamine into WTe2 and MoTe2, and we also succeeded in synthesizing new superconductors with Tc = 5.5 - 7 K in SnSe2.

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同時に変化させて多くの新規超伝導体を合成することである。FeSeにおいては、直鎖モノアミンを用いると層間に縦に二重にモノアミンが配列し、層間長が極端に伸長することが分かった。この手法は、他の物質にも応用可能であり、層間長制御における新しい知見を得る事が出来た。
遷移金属ダイカルコゲナイドWTe2とMoTe2はワイル半金属候補物質であり、コインターカレーションに初めて成功し超伝導を観測したことは、トポロジカル物質の研究分野においても非常に意義のある研究である。

Report

(4 results)
  • 2021 Annual Research Report   Final Research Report ( PDF )
  • 2020 Research-status Report
  • 2019 Research-status Report
  • Research Products

    (26 results)

All 2022 2021 2020 2019

All Journal Article (8 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 8 results,  Open Access: 8 results) Presentation (18 results) (of which Int'l Joint Research: 6 results)

  • [Journal Article] Revised phase diagram of the high-Tc cuprate superconductor Pb-doped Bi2Sr2CaCu2O8+δ revealed by anisotropic transport measurements2022

    • Author(s)
      Harada Keiichi、Teramoto Yuki、Usui Tomohiro、Itaka Kenji、Fujii Takenori、Noji Takashi、Taniguchi Haruka、Matsukawa Michiaki、Ishikawa Hajime、Kindo Koichi、Dessau Daniel S.、Watanabe Takao
    • Journal Title

      Physical Review B

      Volume: 105 Issue: 8 Pages: 085131-085131

    • DOI

      10.1103/physrevb.105.085131

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] New Lithium and Ethylenediamine Co-Intercalated Superconductors Lix(C2H8N2)yMoTe22021

    • Author(s)
      M. Ono, T. Noji, K. Sato, T. Kawamata, M. Kato
    • Journal Title

      Journal of the Physical Society of Japan

      Volume: 90 Issue: 4 Pages: 044707-044707

    • DOI

      10.7566/jpsj.90.044707

    • NAID

      40022539099

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] New Lithium- and Ethylenediamine-Intercalated Superconductors Lix(C2H8N2)yWTe22021

    • Author(s)
      Ono Masato、Noji Takashi、Harada Mimori、Sato Kazuki、Kawamata Takayuki、Kato Masatsune
    • Journal Title

      Journal of the Physical Society of Japan

      Volume: 90 Issue: 1 Pages: 014706-014706

    • DOI

      10.7566/jpsj.90.014706

    • NAID

      40022452829

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Synthesis of New Lithium- and Monoamine-Intercalated Superconductors Lix(CnH2n+3N)yFe1-zSe (n = 6,8,18) with the Dramatically Expanded Interlayer Spacing2020

    • Author(s)
      Sakamoto Chika、Noji Takashi、Sato Kazuki、Kawamata Takayuki、Kato Masatsune
    • Journal Title

      Journal of the Physical Society of Japan

      Volume: 89 Issue: 11 Pages: 115002-115002

    • DOI

      10.7566/jpsj.89.115002

    • NAID

      210000158569

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Inhomogeneous superconductivity in thin crystals of FeSe1-xTex (x=1.0, 0.95, and 0.9)2020

    • Author(s)
      Ritsuko Eguchi, Megumi Senda, Eri Uesugi, Hidenori Goto, Akihiko Fujiwara, Yasuhiko Imai, Shigeru Kimura, Takashi Noji, Yoji Koike, Yoshihiro Kubozono
    • Journal Title

      Materials Research Express

      Volume: 7 Issue: 3 Pages: 036001-036001

    • DOI

      10.1088/2053-1591/ab7c85

    • NAID

      120006825998

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Achieving the depairing limit along the c axis in Fe1+yTe1-xSex single crystals2020

    • Author(s)
      Sun Yue、Ohnuma Haruka、Ayukawa Shin-ya、Noji Takashi、Koike Yoji、Tamegai Tsuyoshi、Kitano Haruhisa
    • Journal Title

      Physical Review B

      Volume: 101 Issue: 13 Pages: 134516-134516

    • DOI

      10.1103/physrevb.101.134516

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Electron-Doping Effect on Tc in the Undoped (Ce-Free) Superconductor T'-La1.8Eu0.2CuO4 Studied by the Fluorine Substitution for Oxygen2020

    • Author(s)
      Toshiki Sunohara, Takayuki Kawamata, Kota Shiosaka, Tomohisa Takamatsu, Takashi Noji, Masatsune Kato, and Yoji Koike
    • Journal Title

      Journal of the Physical Society of Japan

      Volume: 89 Issue: 1 Pages: 014701-014701

    • DOI

      10.7566/jpsj.89.014701

    • NAID

      210000157753

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Enhancement of the superconducting transition temperature by the Sr-substitution for Ba in (Yb,Ca)Ba2Cu3O62019

    • Author(s)
      Nakagawa Kohei、Sumino Yoshiki、Kim Keon、Noji Takashi、Kawamata Takayuki、Koike Yoji、Kato Masatsune
    • Journal Title

      Physica C: Superconductivity and its Applications

      Volume: 564 Pages: 38-41

    • DOI

      10.1016/j.physc.2019.06.001

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] 二次元反強磁性スピン系La2NiO4+δ のスピン熱伝導2022

    • Author(s)
      五十嵐勇樹, 川股隆行, 長岡凌生, 野地尚, 加藤雅恒
    • Organizer
      日本物理学会 第77 回年次大会
    • Related Report
      2021 Annual Research Report
  • [Presentation] SnSe2への リチウム モノアミン コインターカレーションによる超伝導2021

    • Author(s)
      坂本 千佳、野地 尚、川股 隆行、加藤 雅恒
    • Organizer
      第82回 応用物理学会秋季学術講演会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 共置換したY1-xCaxBa2-ySryCu4O8の超伝導特性2021

    • Author(s)
      五十右 理乃、佐藤 秀孝、川股 隆行、野地 尚、加藤 雅恒
    • Organizer
      第82回 応用物理学会秋季学術講演会
    • Related Report
      2021 Annual Research Report
  • [Presentation] Bi-2212相の超伝導転移温度向上を目指した(Bi,Pb)2(Sr,Ba,La)2CaCu2O8の合成2021

    • Author(s)
      佐々木 佑、川股 隆行、野地 尚、加藤 雅恒
    • Organizer
      第76回応用物理学会東北支部学術講演会
    • Related Report
      2021 Annual Research Report
  • [Presentation] SnSe2へのリチウムアミンのコインターカレーションと超伝導特性2021

    • Author(s)
      坂本 千佳、野地 尚、川股 隆行、加藤 雅恒
    • Organizer
      第76回応用物理学会東北支部学術講演会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 反強磁性スピン正方格子系La2NiO4の単結晶育成とスピン熱伝導2021

    • Author(s)
      五十嵐 勇樹、長岡 凌生、川股 隆行、野地 尚、加藤 雅恒
    • Organizer
      第76回応用物理学会東北支部学術講演会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 超伝導転移温度の向上を目指したNdBa2Cu3OyにおけるBa2+/Nd3+置換効果2021

    • Author(s)
      武田 一志、樋口 海、川股 隆行、野地 尚、加藤 雅恒
    • Organizer
      第76回応用物理学会東北支部学術講演会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 超伝導転移温度向上に向けた(Y, Ca)(Ba, Sr)2Cu4O8の合成2021

    • Author(s)
      五十右理乃、佐藤秀孝、川股 隆行、野地 尚、加藤 雅恒
    • Organizer
      第76回応用物理学会東北支部学術講演会
    • Related Report
      2021 Annual Research Report
  • [Presentation] Superconductivity in Y1-xCaxBa2-ySryCu4O8 prepared by the solid-state reaction method2021

    • Author(s)
      Ayano Imigi, Hidetaka Sato, Takayuki Kawamata, Takashi Noji, Masatsune Kato
    • Organizer
      The 34th International Symposium on Superconductivity (ISS2021)
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Achieving the depairing limit along c-axis in Fe(Te,Se) single crystals.2020

    • Author(s)
      Y. Sun, H. Ohnuma, S. Ayukawa, T. Noji, Y. Koike, T. Tamegai, H. Kitano
    • Organizer
      日本物理学会2020年秋季大会
    • Related Report
      2020 Research-status Report
  • [Presentation] New Lithium- and Ethylenediamine-Intercalated Superconductors Lix(C2H8N2)yWTe22020

    • Author(s)
      Masato Ono, Takashi Noji, Mimori Harada, Kazuki Sato, Takayuki Kawamata, Masatsune Kato
    • Organizer
      33th International Symposium on Superconductivity
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research
  • [Presentation] 金属-有機分子コインターカレーションによる新規超伝導体Lix(EDA)yWTe2の合成2020

    • Author(s)
      小野雅斗、野地尚、原田美森、佐藤和輝、川股隆行、加藤雅恒
    • Organizer
      第75回応用物理学会東北支部学術講演会
    • Related Report
      2020 Research-status Report
  • [Presentation] SnX2 (X=S, Se)への金属有機分子コインターカレーションによる超伝導2020

    • Author(s)
      坂本 千佳 、 野地 尚 、 川股 隆行 、 加藤 雅恒
    • Organizer
      第75回応用物理学会東北支部学術講演会
    • Related Report
      2020 Research-status Report
  • [Presentation] (RE, Ca)(Ba, Sr)2Cu4O8のTc向上を目指した元素置換2020

    • Author(s)
      五十右理乃、野地尚、川股隆行、加藤雅恒
    • Organizer
      日本物理学会第75回年次大会
    • Related Report
      2019 Research-status Report
  • [Presentation] Co-Intercalation of Li and Ethylenediamine into the Bi-based Chalcogenide with the Layered Structure by Solvothermal Technique2019

    • Author(s)
      Shota Ueno, Takashi Noji, Takayuki Kawamata, Masatsune Kato
    • Organizer
      32th International Symposium on Superconductivity
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Superconductivity in the heavily Pb-doped Bi-2212 phase of (Bi,Pb)2sr2CaCu2O8-δ2019

    • Author(s)
      Koki Takano, Ryohei Ito, Takayuki Kawamata, Takashi Noji, Masatsune Kato
    • Organizer
      32th International Symposium on Superconductivity
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Electron-doping Effect and the Electronic State in the Undoped (Ce-free) superconductor T’-La1.8Eu0.2CuO4-δ2019

    • Author(s)
      Toshiki Sunohara, Takayuki Kawamata, Kota Shiosaka, Tomohosa Takamatsu, Takashi Noji, Masatsune Kato
    • Organizer
      32th International Symposium on Superconductivity
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Elemental Substitution in the Re-123 and Bi-2212 Cuprate Superconductors for the Enhancement of Tc2019

    • Author(s)
      M. Kato, K. Nakagawa, T. Kawamata, T. Noji and Y. Koike
    • Organizer
      Materials Research Meeting 2019
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research

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Published: 2019-04-18   Modified: 2023-01-30  

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