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The reserch of superconductibity emerging in structural/order phase boundary, and the exploring the related novel materials

Research Project

Project/Area Number 24740238
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeMulti-year Fund
Research Field Condensed matter physics II
Research InstitutionThe University of Tokyo

Principal Investigator

PYON Sunseng  東京大学, 工学(系)研究科(研究院), 助教 (40595972)

Project Period (FY) 2012-04-01 – 2014-03-31
Project Status Completed (Fiscal Year 2013)
Budget Amount *help
¥3,380,000 (Direct Cost: ¥2,600,000、Indirect Cost: ¥780,000)
Fiscal Year 2013: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2012: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
Keywords超伝導 / 新物質探索 / 構造解析 / 電子状態解明 / 結晶構造 / 超伝導線材
Research Abstract

Two researches were performed in this period.
We found that the superconducting state appear in IrTe2 with carrier doping. Low temperature structure and electronic states of IrTe2 were also clarified. These results contribute to development of the field of condensed matter physics.
We found that critical current density in iron-based superconductor is significantly enhanced by inducing defects by heavy ion irradiation. Furthermore, we succeeded to fabricate superconducting round wire which has large critical current density. It is shown that iron-based superconducting wire is the promising candidate for practical application.

Report

(3 results)
  • 2013 Annual Research Report   Final Research Report ( PDF )
  • 2012 Research-status Report
  • Research Products

    (43 results)

All 2014 2013 2012

All Journal Article (23 results) (of which Peer Reviewed: 23 results) Presentation (18 results) (of which Invited: 4 results) Book (2 results)

  • [Journal Article] Enhancement of critical current densities by high-pressure sintering in (Sr,K)Fe_2As_2 PIT wires2014

    • Author(s)
      Sunseng Pyon, Yuji Tsuchiya, Hiroshi Inoue, Hideki Kajitani, Norikiyo Koizumi, Satoshi Awaji, Kazuo Watanabe, Tsuyoshi Tamegai
    • Journal Title

      Superconductor Science and Technology

      Volume: (掲載決定)

    • Related Report
      2013 Final Research Report
    • Peer Reviewed
  • [Journal Article] Effects of high-pressure annealing on critical current density in122 type iron pnictide wires2014

    • Author(s)
      Sunseng Pyon, Yuji Tsuchiya, Hiroshi Inoue, Norikiyo Koizumi, Hideki Kajitani, Tsuyoshi Tamegai
    • Journal Title

      Physica C

      Volume: (掲載決定)

    • Related Report
      2013 Final Research Report
    • Peer Reviewed
  • [Journal Article] Effects of high-pressure sintering on critical current density in Co-doped BaFe_2As_2 wires2014

    • Author(s)
      Hiroshi Inoue, Yuji Tsuchiya, Shinya Tada, Sunseng Pyon, Hideki Kajitani, Norikiyo Koizumi, and Tsuyoshi Tamegai
    • Journal Title

      Physica C

      Volume: (掲載決定)

    • Related Report
      2013 Final Research Report
    • Peer Reviewed
  • [Journal Article] Te 5 p orbitals bring three-dimensional electronic structure to two-dimensional Ir_<0.95>Pt_<0.05>Te_22014

    • Author(s)
      D. Ootsuki. T. Toriyama, S. Pyon, K. Kudo, M. Nohara, K. Horiba, M. Kobayashi, K. Ono, H. Kumigashira, T. Noda, T. Sugimoto, A. Fujimori, N. LSaini, T. Konishi, Y. Ohta, T. Mizokawa
    • Journal Title

      Physical Review B

      Volume: 89 Issue: 10

    • DOI

      10.1103/physrevb.89.104506

    • Related Report
      2013 Final Research Report
    • Peer Reviewed
  • [Journal Article] Important Roles of Te 5p and lr 5d Spin-Orbit lnteractions on the Multi-bandElectronic Structure ofTriangular Lattice Superconductor Ir_<1-x>Pt_xTe_22014

    • Author(s)
      D. Ootsuki, T. Toriyama M. Kobayashi, S. Pyon, K. Kudo, M. Nohara T. Sugimoto, T. Yoshida, M. Horio, A. Fujimori, M. Arita, H. Anzai, H, Namatame, M. Taniguchi, N. L. saini, T. Konishi, Y. Ohta, and T. Mizokawa
    • Journal Title

      Journal of the Physical Society of Japan

      Volume: 83 Issue: 3 Pages: 33704-33704

    • DOI

      10.7566/jpsj.83.033704

    • Related Report
      2013 Final Research Report
    • Peer Reviewed
  • [Journal Article] Switching of Conducting Planes by Partial Dimer Forrnation in lrTe_22014

    • Author(s)
      T. Toriyama M. Kobori, T. Konishi, Y. Ohta, K. Sugimoto, J. Kim, A. Fujiwara, S. Pyon, K. Kudo, M. Nohara
    • Journal Title

      Journal ofthe Physical Society of Japan

      Volume: 83 Issue: 3 Pages: 33701-33701

    • DOI

      10.7566/jpsj.83.033701

    • Related Report
      2013 Annual Research Report 2013 Final Research Report
    • Peer Reviewed
  • [Journal Article] Effects of high-pressure annealing on critical current density in 122 type iron pnictide wires2014

    • Author(s)
      Sunseng Pyon, Yuji Tsuchiya, Hiroshi Inoue, Norikiyo Koizumi, Hideki Kajitani, Tsuyoshi Tamegai
    • Journal Title

      Physica C

      Volume: 未定

    • Related Report
      2013 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Effects of high-pressure sintering on critical current density in Co-doped BaFe2As2 wires2014

    • Author(s)
      Hiroshi Inoue, Yuji Tsuchiya, Shinya Tada, Sunseng Pyon, Hideki Kajitani, Norikiyo Koizumi, and Tsuyoshi Tamegai
    • Journal Title

      Physica C

      Volume: 未定

    • Related Report
      2013 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Local structural displacements across the structural phase transition in IrTe_2 : Order-disorder of dimers and role of Ir-Te correlations2013

    • Author(s)
      B. Joseph, M. Bendele, L. Simonelli, L. Maugeri, S. Pyon, K. Kudo, M. Nohara, T. Mizokawa, and N. L. Saini
    • Journal Title

      Physical Review B

      Volume: Vol.88 Issue: 22

    • DOI

      10.1103/physrevb.88.224109

    • Related Report
      2013 Final Research Report
    • Peer Reviewed
  • [Journal Article] Enhancement of critical current densities in (Ba, K) Fe2As2 by 320 MeV Au irradiation in single crystals and by high-pressure sintering in PIT wires2013

    • Author(s)
      S. Pyon, T. Taen, F. Ohtake, Y. Tsuchiya, H. Inoue, H. Akiyama, H. Kajitani, N. Koizumi, S. Okayasu, and T. Tamegai
    • Journal Title

      Appl. Phys. Express

      Volume: 6 Issue: 12 Pages: 123101-123101

    • DOI

      10.7567/apex.6.123101

    • Related Report
      2013 Annual Research Report 2013 Final Research Report
    • Peer Reviewed
  • [Journal Article] Emergence of superconductivity near the structural phase boundary in Pt-doped IrTe2 single crystals2013

    • Author(s)
      Sunseng Pyon, Kazutaka Kudo, and Minoru Nohara
    • Journal Title

      Physica C

      Volume: 494 Pages: 80-84

    • DOI

      10.1016/j.physc.2013.04.055

    • Related Report
      2013 Annual Research Report 2013 Final Research Report
    • Peer Reviewed
  • [Journal Article] Electronic Structure Reconstruction by Orbital Symmetry Breaking in IrTe_22013

    • Author(s)
      D. Ootsuki, S. Pyon, K. Kudo, M. Nohara, M. Horio, T. Yoshida, A. Fujimori, M. Arita, H. Anzai, H. Namatame, M. Taniguchi, N. L. saini, T. Mizokawa
    • Journal Title

      Journal of the Physical Society of Japan

      Volume: 82 Issue: 9 Pages: 93704-93704

    • DOI

      10.7566/jpsj.82.093704

    • Related Report
      2013 Annual Research Report 2013 Final Research Report
    • Peer Reviewed
  • [Journal Article] Suppression of Structural Phase Transition in IrTe2 by Isovalent Rh Doping2013

    • Author(s)
      Kazutaka Kudo, Masakazu Kobayashi, Sunseng Pyon and Minoru Nohara
    • Journal Title

      Journal of the Physical Society of Japan

      Volume: 82 Issue: 8 Pages: 85001-85001

    • DOI

      10.7566/jpsj.82.085001

    • Related Report
      2013 Annual Research Report 2013 Final Research Report
    • Peer Reviewed
  • [Journal Article] Band Jahn-Teller effects and Peierls Instability in IrTe_22013

    • Author(s)
      D. Ootsuki, S. Pyon, K. Kudo, M. Nohara, M. Horio, T. Yoshida, A. Fujimori, M. Arita, H. Anzai, H. Namatame, M. Taniguchi, N. L. Saini, T. Mizokawa
    • Journal Title

      Journal of Physics : Conference Series

      Volume: Vol.428 Pages: 012018-012018

    • DOI

      10.1088/1742-6596/428/1/012018

    • Related Report
      2013 Final Research Report 2012 Research-status Report
    • Peer Reviewed
  • [Journal Article] Large, homogeneous, and isotropic critical current density in oxygen annealed Fe1+yTe0.6Se0.4 single crystal2013

    • Author(s)
      Y. Sun, T. Taen, Y. Tsuchiya, Q. P. Ding, S. Pyon, Z. X. Shi, and T. Tamegai
    • Journal Title

      APPLIED PHYSICS EXPRESS

      Volume: 6 Issue: 4 Pages: 43101-43101

    • DOI

      10.7567/apex.6.043101

    • Related Report
      2013 Final Research Report 2012 Research-status Report
    • Peer Reviewed
  • [Journal Article] Angle-dependent spectral weight transfer and evidence of a symmetry-broken in-plane charge response in Ca_<1.9>Na_<0.1>CuO_2Cl_22012

    • Author(s)
      R. Schuster, S. Pyon, M. Knupfer, M. Azuma, M. Takano, H. Takagi, and B. B¨uchner
    • Journal Title

      Physical Review B

      Volume: Vol.86

    • Related Report
      2013 Final Research Report
    • Peer Reviewed
  • [Journal Article] Decrease of upper critical field with underdoping in cuprate superconductors2012

    • Author(s)
      J. Chang, N. D-Leyraud, O. C-Choinière, G. Grissonnanche, F. Laliberté, E. Hassinger, J-Ph. Reid, R. Daou, S. Pyon, T. Takayama, H. Takagi, and L. Taillefer
    • Journal Title

      Nature Physics

      Volume: 8 Issue: 10 Pages: 751-756

    • DOI

      10.1038/nphys2380

    • Related Report
      2013 Final Research Report 2012 Research-status Report
    • Peer Reviewed
  • [Journal Article] Orbital degeneracy and Peierls instability in the triangular-lattice superconductor Ir_<1−x>Pt_xTe_22012

    • Author(s)
      Daiki Ootsuki, Yuki Wakisaka, Sunseng Pyon, Kazutaka Kudo, Minoru Nohara, Masashi Arita, Hiroaki Anzai, Hirofumi Namatame, Masaki Taniguchi, Naurang L. Saini, and Takashi Mizokawa
    • Journal Title

      Physical Review B

      Volume: Vol. 86

    • Related Report
      2013 Final Research Report
    • Peer Reviewed
  • [Journal Article] Orbital Degeneracy, Jahn–Teller Effect, and Superconductivity in Transition-Metal Chalcogenides2012

    • Author(s)
      T. Mizokawa, T. Sudayama, Y.Wakisaka, D. Ootsuki, M. Imaizumi, T. Noji, Y. Koike, S. Pyon, K. Kudo, M. Nohara, H. Anzai, M. Arita, H. Namatame, M. Taniguchi, N.L. Saini
    • Journal Title

      Journal of Superconductivity and Novel Magnetism

      Volume: Vol.25 Pages: 1343-1346

    • Related Report
      2013 Final Research Report
    • Peer Reviewed
  • [Journal Article] Superconductivity Induced by Bond Breaking in the Triangular Lattice of IrTe22012

    • Author(s)
      S. Pyon
    • Journal Title

      Journal of the Physical Society of Japan

      Volume: 81 Issue: 5 Pages: 053701-053701

    • DOI

      10.1143/jpsj.81.053701

    • Related Report
      2013 Final Research Report 2012 Research-status Report
    • Peer Reviewed
  • [Journal Article] Orbital Degeneracy, Jahn-Teller Effect, and Superconductivity in Transition-Metal Chalcogenides2012

    • Author(s)
      Mizokawa, T et al.
    • Journal Title

      JOURNAL OF SUPERCONDUCTIVITY AND NOVEL MAGNETISM

      Volume: 25 Issue: 5 Pages: 1343-1346

    • DOI

      10.1007/s10948-012-1626-x

    • Related Report
      2012 Research-status Report
    • Peer Reviewed
  • [Journal Article] Orbital degeneracy and Peierls instability in the triangular-lattice superconductor Ir1-xPtxTe22012

    • Author(s)
      Ootsuki, D Wakisaka, Y Pyon, S Kudo, K Nohara, M Arita, M Anzai, H Namatame, H Taniguchi, M Saini, NL Mizokawa, T
    • Journal Title

      PHYSICAL REVIEW B

      Volume: 86 Issue: 1 Pages: 1-5

    • DOI

      10.1103/physrevb.86.014519

    • Related Report
      2012 Research-status Report
    • Peer Reviewed
  • [Journal Article] Angle-dependent spectral weight transfer and evidence of a symmetry-broken in-plane charge response in Ca1.9Na0.1CuO2Cl22012

    • Author(s)
      R. Schuster, S. Pyon, M. Knupfer, M. Azuma, M. Takano, H. Takagi, and B. B¨uchner
    • Journal Title

      Physical Review B

      Volume: 86 Issue: 24

    • DOI

      10.1103/physrevb.86.245112

    • Related Report
      2012 Research-status Report
    • Peer Reviewed
  • [Presentation] Emergence of superconductivity in the vicinity of structural phase transition in IrTe_22014

    • Author(s)
      S. Pyon, K. Kudo, M. Nohara
    • Organizer
      International Conference on Electronic Materials 2014 (IUMRS-ICEM2014)
    • Place of Presentation
      Taiwan, Taipei
    • Related Report
      2013 Final Research Report
    • Invited
  • [Presentation] Enhancement of critical current densities in 122-type iron-based superconductor in powder-in-tube wires by high pressure sintering2014

    • Author(s)
      S. Pyon, H. Inoue, Y. Tsuchiya, N. Koizumi, H. Kajitani, T. Tamegai
    • Organizer
      International Conference on Electronic Materials 2014 (IUMRS-ICEM2014)
    • Place of Presentation
      Taiwan, Taipei
    • Related Report
      2013 Final Research Report
  • [Presentation] 高圧下熱処理した122系鉄ニクタイド超伝導線材の臨界電流2014

    • Author(s)
      卞舜生、土屋雄司、井上啓、梶谷秀樹、小泉徳潔、淡路智、渡辺和雄、為ヶ井強
    • Organizer
      日本物理学会2014年年次大会
    • Place of Presentation
      東海大学(27pCE-15)
    • Related Report
      2013 Final Research Report
  • [Presentation] Emergence of superconductivity in the vicinity of structural phase transition in IrTe22014

    • Author(s)
      S. Pyon, K. Kudo, and M. Nohara
    • Organizer
      International Conference on Electronic Materials 2014 (IUMRS-ICEM 2014)
    • Place of Presentation
      Taiwan,Taipei
    • Related Report
      2013 Annual Research Report
    • Invited
  • [Presentation] 高圧下熱処理した122系鉄ニクタイド超伝導線材の臨界電流2014

    • Author(s)
      卞 舜生、土屋 雄司、井上 啓、梶谷 秀樹、小泉 徳潔、淡路 智、渡辺 和雄、為ヶ井 強
    • Organizer
      日本物理学会2014年年次大会
    • Place of Presentation
      東海大学、神奈川県
    • Related Report
      2013 Annual Research Report
  • [Presentation] Enhancement of critical current densities in 122-type iron-based superconductor in powder-in-tube wires by high pressure sintering2014

    • Author(s)
      S. Pyon, H. Inoue, Y. Tsuchiya, N. Koizumi, H. Kajitani, and T. Tamegai
    • Organizer
      International Conference on Electronic Materials 2014 (IUMRS-ICEM 2014)
    • Place of Presentation
      Taiwan, Taipei
    • Related Report
      2013 Annual Research Report
  • [Presentation] Effects of high pressure annealing on critical current density in 122 type iron pnictide wires2013

    • Author(s)
      S. Pyon, Y. Tsuchiya, H. Inoue, N. Koizumi, H. Kajitani, T. Tamegai
    • Organizer
      26th International Symposium on Superconductivity (ISS2013)
    • Place of Presentation
      Tokyo, Japan(WT-30)
    • Related Report
      2013 Final Research Report
  • [Presentation] BaFe_2As_2系線材の臨界電流に対する高圧下熱処理効果2013

    • Author(s)
      卞舜生、土屋雄司、井上啓、梶谷秀樹、小泉徳潔、為ヶ井強
    • Organizer
      日本物理学会2013年秋季大会
    • Place of Presentation
      徳島大学(28aEC-13)
    • Related Report
      2013 Final Research Report
  • [Presentation] KドープBaFe_2As_2超伝導線材の臨界電流特性2013

    • Author(s)
      卞舜生、土屋雄司、田縁俊光、大堀高広、井上啓、為ヶ井強
    • Organizer
      日本物理学会2013年年次大会
    • Place of Presentation
      広島大学
    • Related Report
      2013 Final Research Report
  • [Presentation] Crystal growth of Pt-doped IrTe_22013

    • Author(s)
      S. Pyon, K. Kudo, M. Nohara
    • Organizer
      Annual APS March Meeting 2013 (APS2013)
    • Place of Presentation
      Baltimore, Maryland, USA
    • Related Report
      2013 Final Research Report
  • [Presentation] BaFe2As2 系線材の臨界電流に対する高圧下熱処理効果2013

    • Author(s)
      卞舜生、土屋雄司、井上啓、梶谷秀樹、小泉徳潔、為ヶ井強
    • Organizer
      日本物理学会2013年秋季大会
    • Place of Presentation
      徳島大学、徳島県
    • Related Report
      2013 Annual Research Report
  • [Presentation] Effects of high pressure annealing on critical current density in 122 type iron pnictide wires2013

    • Author(s)
      S. Pyon, Y. Tsuchiya, H. Inoue, N. Koizumi, H. Kajitani, T. Tamegai
    • Organizer
      26th International Symposium on Superconductivity (ISS2013)
    • Place of Presentation
      船堀タワーホール、東京都
    • Related Report
      2013 Annual Research Report
  • [Presentation] Crystal growth of Pt-doped IrTe22013

    • Author(s)
      S. Pyon, K. Kudo, M. Nohara
    • Organizer
      Annual APS March Meeting 2013 (APS2013)
    • Place of Presentation
      Baltimore, Maryland, USA
    • Related Report
      2012 Research-status Report
  • [Presentation] K ドープBaFe2As2 超伝導線材の臨界電流特性2013

    • Author(s)
      卞舜生、土屋雄司、田縁俊光、大堀高広、井上啓、為ヶ井強
    • Organizer
      日本物理学会2013年年次大会
    • Place of Presentation
      広島大学
    • Related Report
      2012 Research-status Report
  • [Presentation] Emergence of superconductivity in the vicinity of the structural phase boundary in Pt doped IrTe_22012

    • Author(s)
      S. Pyon, K. Kudo and M. Nohara
    • Organizer
      25th International Symposium on Superconductivity(ISS2012)
    • Place of Presentation
      Tokyo, Japan
    • Related Report
      2013 Final Research Report
    • Invited
  • [Presentation] PtドープIrTe_2の単結晶育成2012

    • Author(s)
      卞舜生、工藤一貴、野原実、大城善博、池田陽一、荒木新吾、小林達生
    • Organizer
      日本物理学会2012年秋季大会
    • Place of Presentation
      横浜国立大学
    • Related Report
      2013 Final Research Report
  • [Presentation] Pt ドープIrTe2 の単結晶育成2012

    • Author(s)
      卞舜生、工藤一貴、野原実、大城善博、池田陽一、荒木新吾、小林達生
    • Organizer
      日本物理学会2012年秋季大会
    • Place of Presentation
      横浜国立大学
    • Related Report
      2012 Research-status Report
  • [Presentation] Emergence of superconductivity in the vicinity of the structural phase boundary in Pt doped IrTe22012

    • Author(s)
      S. Pyon, K. Kudo and M. Nohara
    • Organizer
      25th International Symposium on Superconductivity (ISS2012)
    • Place of Presentation
      Tokyo, Japan
    • Related Report
      2012 Research-status Report
    • Invited
  • [Book] 日本物理学会誌2012

    • Author(s)
      卞舜生、工藤一貴、野原実
    • Publisher
      (株)科学技術社
    • Related Report
      2013 Final Research Report
  • [Book] 日本物理学会誌 (2012 Vol.67 No.8)2012

    • Author(s)
      卞舜生、工藤一貴、野原実
    • Total Pages
      1
    • Publisher
      (株)科学技術社
    • Related Report
      2012 Research-status Report

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Published: 2013-05-31   Modified: 2020-05-15  

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