Superconductivity in p-electron system-United understanding from semiconductor to superconductor-

• Project/Area Number: 20740202
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Single-year Grants
• Research Field: Condensed matter physics II
• Research Institution: Aoyama Gakuin University
• Principal Investigator: MURANAKA Takahiro Aoyama Gakuin University, 理工学部, 助教 (70398577)
• Project Period (FY): 2008 – 2009
• Project Status: Completed (Fiscal Year 2009)
• Budget Amount: ¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000); Fiscal Year 2009: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000); Fiscal Year 2008: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
• Keywords: p電子系化合物 / 半導体 / 超伝導 / sp共有結合性ネットワーク

Research Abstract

In this research, we focused on wide-gap semiconductor SiC having pollytypes. By B and Al-doping toward 3C-SiC and 6H-SiC, we discovered the superconductivity at T_c～1.5K in each compounds. Through these discoveries, the superconducting state (Type-I or II) in hole-doped semiconductors can be qualitatively interpreted by accepter levels.

Research Products

• [Journal Article] Thermodynamic Properties of the Non-centrosymmetric Type-I Superconductor Rh_2Ga_9 and Ir_2Ga_9 (2009)
  • Author(s): Kouhei Wakui, Satoshi Akutagawa, Naoki Kase, Kenji Kawashima, Takahiro Muranaka, Yasufumi Iwahori, Jiro Abe, Jun Akimitsu
  • Journal Title: J. Phys. Soc. Jpn. 78(3)
  • NAID: 110007138862
  • Peer Reviewed
• [Journal Article] Antiferromagnetic Kondo-lattice system Ce_2RhSi_3 with moderate heavy-fermion behavior (2009)
  • Author(s): N. Kase, T. Muranaka, J. Akimitsu
  • Journal Title: Journal of Magnetism and Magnetic Materials 321(20) Pages: 3380-3383
  • Peer Reviewed
• [Journal Article] Superconductivity in transition metal-silicide W_5Si_3 (2009)
  • Author(s): K. Kawashima, T. Muranaka, Y. Kousaka, S. Akutagawa, J. Akimitsu
  • Journal Title: Journal of Physics: Conference Series 150
  • Peer Reviewed
• [Journal Article] Superconductivity of hexagonal heavily-boron doped silicon carbide (2009)
  • Author(s): M. Kriener, T. Muranaka Z. -A. Ren, J. Kato, J. Akimitsu, Y. Maeno
  • Journal Title: Journal of Physics: Conference Series 150
  • Peer Reviewed
• [Journal Article] Magnetic and Structural Phase transitions in Mo_3Sb_7 (2009)
  • Author(s): H. Okabe, S. Yano, T. Muranaka, J. Akimitsu
  • Journal Title: Journal of Physics: Conference Series 150
  • Peer Reviewed
• [Journal Article] キャリアドープされたSiCの超伝導 (2009)
  • Author(s): 村中隆弘, 秋光純
  • Journal Title: 固体物理 44 Pages: 33-42
  • NAID: 40016572040
  • Peer Reviewed
• [Journal Article] 超伝導体MgB_2の発展と応用 (2009)
  • Author(s): 村中隆弘, 秋光純
  • Journal Title: 応用物理 78(6) Pages: 554-558
  • NAID: 10024752310
  • Peer Reviewed
• [Journal Article] Thermodynamic Properties of the Non- centrosymmetric Type- I Superconductor Rh_2Ga_9 and Ir_2Ga_9 (2009)
  • Author(s): K. Wakui, S. Akutagawa, N. Kase, K. Kawashima, T. Muranaka, Y. Iwahori, J. Abe. and J. Akimitsu
  • Journal Title: J. Phys. Soc. Jpn 78
  • NAID: 110007138862
  • Peer Reviewed
• [Journal Article] Soft-phonon-driven superconductivity in CaAlSi as seen by inelastic x-ray scattering (2008)
  • Author(s): S. Kuroiwa, A.Q.R. Baron, T. Muranaka R. Heid, K. -P. Bohnen, J. Akimitsu
  • Journal Title: Phys. Rev. B 77
  • Peer Reviewed
• [Journal Article] Superconductivity in the Ternary Germanide Y_3Pt_4Ge_6 (2008)
  • Author(s): Naoki Kase, Takahiro Muranaka, Jun Akimitsu
  • Journal Title: J. Phys. Soc. Jpn. 77(5)
  • NAID: 110006666014
  • Peer Reviewed
• [Journal Article] Specific heat and electronic states of superconducting boron-doped silicon carbide (2008)
  • Author(s): M. Kriener, Y. Maeno, T. Oguchi, Z. -A. Ren, J. Kato, T. Muranaka, J. Akimitsu
  • Journal Title: Phys. Rev. B 78
  • Peer Reviewed
• [Journal Article] Superconductivity in carrier-doped silicon carbide (2008)
  • Author(s): Takahiro Muranaka, Yoshitake Kikuchi, Taku Yoshizawa, Naoki Shirakawa, Jun Akimitsu
  • Journal Title: Sci. Techn. Adv. Mater. 9
  • Peer Reviewed
• [Journal Article] Superconductivity in heavily boron-doped silicon carbide (2008)
  • Author(s): Markus Kriener, Takahiro Muranaka, Junya Kato, Zhi-An Ren, Jun Akimitsu, Yoshiteru Maeno
  • Journal Title: Sci. Technol. Adv. Mater. 9
  • Peer Reviewed
• [Journal Article] Superconductivity in heavily boron-doped silicon carbide (2008)
  • Author(s): M. Kriener, T. Muranaka, J. Kato, Z.- A. Ren, J. Akimitsu and Y. Maeno
  • Journal Title: Sci. Technol. Adv. Mater 9
  • Peer Reviewed
• [Journal Article] Superconductivity in carrier-doped silicon carbide (2008)
  • Author(s): T. Muranaka, Y. Kikuchi, T. Yoshizawa, N. Shirakawa and J. Akimitsu
  • Journal Title: Sci. Technol. Adv. Mater 9
  • Peer Reviewed
• [Journal Article] Specific heat and electronic states of superconducting boron-doped silicon carbide (2008)
  • Author(s): M. Kriener, Y. Maeno, T. Oguchi, Z.-A. Ren, J. Kato, T. Muranaka, and J. Akimitsu
  • Journal Title: Phys. Rev. B 78
  • Peer Reviewed
• [Journal Article] Superconductivity in the Ternary Germanide Y_3Pt_4Ge_6 (2008)
  • Author(s): N. Kase, T. Muranaka, and J. Akimitsu
  • Journal Title: J. Phys. Soc. Jpn 77
  • NAID: 110006666014
  • Peer Reviewed
• [Journal Article] Soft-phonon-driven superconductivity in CaAlSi as seen by inelastic x-ray scattering (2008)
  • Author(s): S. Kuroiwa, A. Q. R. Baron, T. Muranaka, R. Heid, K.-P. Bohnen, and J. Akimitsu
  • Journal Title: Phys. Rev. B 77
  • Peer Reviewed
• [Presentation] ワイドギャップ半導体の超伝導 (2010)
  • Author(s): 村中隆弘, 菊池善剛, 中川あい子, 白川直樹, 秋光純
  • Organizer: 日本物理学会第65回年次大会
  • Place of Presentation: 岡山大学
  • Year and Date: 2010-03-20
• [Presentation] FeSe超伝導体の圧力誘起相転移 (2009)
  • Author(s): 岡部博孝, 竹下直, 堀金和正, 村中隆弘, 秋光純
  • Organizer: 日本物理学会2009年秋季大会
  • Place of Presentation: 熊本大学
  • Year and Date: 2009-09-28
• [Presentation] ワイドギャップ半導体SiCの超伝導 (2009)
  • Author(s): 村中隆弘
  • Organizer: 日本物理学会2009年秋季大会
  • Place of Presentation: 熊本大学
  • Year and Date: 2009-09-26
• [Presentation] FeSe系超伝導体の大型単結晶育成とドーピング効果 (2009)
  • Author(s): 山下拓生, 岡部博孝, 竹下直, 堀金和正, 村中隆弘, 秋光純
  • Organizer: 日本物理学会2009年秋季大会
  • Place of Presentation: 熊本大学
  • Year and Date: 2009-09-26
• [Presentation] Superconductivity in wide-gap semiconductors (2009)
  • Author(s): T. Muranaka
  • Organizer: The 9th International Conference on Materials and Mechanisms of Superconductivity (M2X-IX)第9回超伝導国際会議
  • Place of Presentation: 京王ブラザホテル(東京)
  • Year and Date: 2009-09-11
• [Presentation] バンドギャップ半導体の超伝導 (2009)
  • Author(s): 村中隆弘, 菊池義剛, 中川あい子, 大野正人, 白川直樹, 秋光純
  • Organizer: 日本物理学会第64回年次大会
  • Place of Presentation: 立教大学
  • Year and Date: 2009-03-30
• [Presentation] Specific-heat of boron-doped superconducting silicon carbide down to dilution-refrigerator temperatures (2009)
  • Author(s): M. Kriener, G. Eguchi, T. Muranaka, Z.A. Ren, J. Kato, J. Akimitsu, Y. Maeno
  • Organizer: 日本物理学会第64回年次大会
  • Place of Presentation: 立教大学
  • Year and Date: 2009-03-30
• [Presentation] キャリアドープされたSiCの超伝導 (2009)
  • Author(s): 菊池善剛, 大野正人, 村中隆弘, 白川直樹, 秋光純
  • Organizer: 日本物理学会第64回年次大会
  • Place of Presentation: 立教大学
  • Year and Date: 2009-03-28
• [Presentation] 遷移金属ニクタイドの合成と評価 (2009)
  • Author(s): 岡部博孝, 村中隆弘, 秋光純
  • Organizer: 日本物理学会第64回年次大会
  • Place of Presentation: 立教大学
  • Year and Date: 2009-03-27
• [Presentation] 重い電子系超伝導体Tm_5Rh_6Sn_<18>の磁気的性質 (2009)
  • Author(s): 加瀬直樹, 富安啓輔, 村中隆弘, 秋光純
  • Organizer: 日本物理学会第64回年次大会
  • Place of Presentation: 立教大学
  • Year and Date: 2009-03-27
• [Presentation] ワイドバンドギャップ半導体SiCの他元素置換による超伝導化 (2008)
  • Author(s): 菊池善剛, 大野正人, 村中隆弘, 秋光純, 白川直樹
  • Organizer: 日本物理学会2008年秋季大会
  • Place of Presentation: 岩手大学
  • Year and Date: 2008-09-21
• [Presentation] ワイドバンドギャップ半導体の超伝導 (2008)
  • Author(s): 村中隆弘, 菊池善剛, 中川あい子, 大野正人, 秋光純, 白川直樹
  • Organizer: 日本物理学会2008年秋季大会
  • Place of Presentation: 岩手大学
  • Year and Date: 2008-09-20
• [Presentation] Specific-heat study of doped superconducting silicon carbide with different dopands (2008)
  • Author(s): M. Kriener, G. Eguchi, T. Muranaka Z.A. Ren, J. Kato, J. Akimitsu, Y. Maeno
  • Organizer: 日本物理学会2008年秋季大会
  • Place of Presentation: 岩手大学
  • Year and Date: 2008-09-20
• [Presentation] Superconductivity in Al doped SiC (2008)
  • Author(s): T. Muranaka
  • Organizer: IWSDRM2008(International Workshop on Superconductivity in Diamond and Related Materials)
  • Place of Presentation: NIMS((独)物質・材料研究機構)
• [Book] 超伝導ハンドブック【2. 2. 3】MgB_2, 【2. 2. 4. 2】ドープされた半導体(2) (2009)
  • Author(s): 福山秀敏, 秋光純, 村中隆弘(共著)
  • Publisher: 朝倉書店
• [Book] 超伝導ハンドブック【2.2.3】MgB_2,【2.2.4.2】ドープされた半導体(2) (2009)
  • Author(s): 福山秀敏、秋光純、村中隆弘(共著)
  • Publisher: 朝倉書店
• [Book] ホウ素・ホウ化物および関連物質の基礎と応用【第2編応用】第2章ホウ素化合物超電導材料 (2008)
  • Author(s): 高木研一, 村中隆弘(共著)
  • Publisher: シーエムシー出版