Study on physical properties of Mott-insulating and electron-doped state of ambipolar high-Tc cuprates

• Project/Area Number: 22740229
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Single-year Grants
• Research Field: Condensed matter physics II
• Research Institution: Osaka University
• Principal Investigator: SEGAWA Kouji 大阪大学, 産業科学研究所, 准教授 (20371297)
• Project Period (FY): 2010 – 2011
• Project Status: Completed (Fiscal Year 2011)
• Budget Amount: ¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000); Fiscal Year 2011: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000); Fiscal Year 2010: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
• Keywords: 強相関電子系 / 結晶成長 / モット絶縁体 / 酸化物高温超伝導体 / 高品質単結晶

Research Abstract

The aim of the present project is studying the physical properties of an insulating state and an electron-doped state in a new candidate of an ambipolar cuprate using Nd. I have succeeded in making single crystals of the system, but unfortunately ambipolar doping was not realized.

Research Products

• [Journal Article] Topological Superconductivity in CuxBi_2Se_3 (2011)
  • Author(s): S. Sasaki, M. Kriener, K. Segawa, K. Yada, Y. Tanaka, M. Sato and Y. Ando
  • Journal Title: Phys. Rev. Lett Volume: 107 Pages: 217001-217001
  • Peer Reviewed
• [Journal Article] Electrochemical synthesis and superconducting phase diagram of CuxBi2Se3 (2011)
  • Author(s): M. Kriener, K. Segawa, Z. Ren, S. Sasaki, S. Wada, S. Kuwabata and Y. Ando
  • Journal Title: Phys. Rev Volume: B84 Pages: 54513-54513
  • Peer Reviewed
• [Journal Article] Bulk Superconducting Phase with a Full Energy Gap in the Doped Topological Insulator CuxBi_2Se_3 (2011)
  • Author(s): M. Kriener, K. Segawa, Z. Ren, S. Sasaki and Y. Ando
  • Journal Title: Phys. Rev. Lett Volume: 106 Pages: 127004-127004
  • Peer Reviewed
• [Journal Article] Zero-Doping State and Electron. Hole Asymmetry in an Ambipolar Cuprate (2010)
  • Author(s): K. Segawa, M. Kofu, S-H. Lee, I. Tsukada, H. Hiraka, M. Fujita, S. Chang, K. Yamada and Y. Ando
  • Journal Title: Nature Physics Volume: 6 Pages: 579-583
  • Peer Reviewed
• [Journal Article] Chemical Potential Jump between the Hole-Doped and Electron-Doped Sides of Ambipolar High-Tc Cuprate Superconductors (2010)
  • Author(s): M. Ikeda, M. Takizawa, T. Yoshida, A. Fujimori, K. Segawa and Y. Ando
  • Journal Title: Phys. Rev Volume: B82
  • Peer Reviewed
• [Journal Article] Chemical potential jump between the hole-doped and electron-dopedsides of ambipolar high-T_c cuprate superconductors (2010)
  • Author(s): M.Ikeda
  • Journal Title: Physical Review B Volume: 82
  • Peer Reviewed
• [Journal Article] Zero-doping state and electron-hole asymmetry in an ambipolar cuprate (2010)
  • Author(s): Kouji Segawa
  • Journal Title: Nature Physics Volume: 6 Pages: 579-583
  • Peer Reviewed
• [Presentation] トポロジカル超伝導体CuxBi2Se3の低温電子状態 (2012)
  • Author(s): 岩瀬文達, 鄭国慶, Y. S. Hor, M. Kriener, 瀬川耕司, Z. Ren, 安藤陽一
  • Organizer: 日本物理学会第67回年次大会
  • Place of Presentation: 関西学院大学(兵庫県)
  • Year and Date: 2012-03-26
• [Presentation] トポロジカル量子相転移を示す物質TlBi(SexS1_1_x)_2の試料作製と輸送特性 (2012)
  • Author(s): 瀬川耕司, 南達哉, 江藤数馬, 佐々木聡, 安藤陽一
  • Organizer: 日本物理学会第67回年次大会
  • Place of Presentation: 関西学院大学(兵庫県)
  • Year and Date: 2012-03-25
• [Presentation] トポロジカル量子相転移を示す物質TlBi(Se_xS_<1-x>)_2の試料作製と輸送特性 (2012)
  • Author(s): 瀬川耕司
  • Organizer: 日本物理学会第67回年次大会
  • Place of Presentation: 関西学院大学
  • Year and Date: 2012-03-25
• [Presentation] Synthesis and Characterization of New Topological Insulators (2012)
  • Author(s): K. Segawa
  • Organizer: APS March Meeting 2012
  • Place of Presentation: Boston convention center(Boston, USA).(招待講演)
  • Year and Date: 2012-02-28
• [Presentation] Synthesis and Characterization of New Topological Insulators (2012)
  • Author(s): Kouji SEGAWA
  • Organizer: APS March Meeting 2012
  • Place of Presentation: Boston Convention Center, Boston, USA(招待講演)
  • Year and Date: 2012-02-28
• [Presentation] Physical properties of bulk-superconducting CuxBi2Se3 (2011)
  • Author(s): Kouji Segawa, M. Kriener, Zhi Ren, S. Sasaki and Yoichi Ando
  • Organizer: The FIRST-QS2C Workshop on" Emergent Phenomena of Correlated Materials"
  • Place of Presentation: ANAインターコンチネンタル万座ビーチリゾート(沖縄県)
  • Year and Date: 2011-12-13
• [Presentation] Physical properties of bulk-superconducting CuxBi2Se3 (2011)
  • Author(s): Kouji SEGAWA
  • Organizer: The FIRST-QS2C Workshop on "Emergent Phenomena of Correlated Materials"
  • Place of Presentation: ANAインターコンチネンタル万座ビーチリゾート,沖縄,日本
  • Year and Date: 2011-12-13
• [Presentation] Physical properties of bulk-superconducting CuxBi2Se3 (2011)
  • Author(s): K. Segawa
  • Organizer: International Workshop for Young Researchers on Topological Quantum Phenomena in Condensed Matter with Broken Symmetries
  • Place of Presentation: ホテルラフォーレ琵琶湖(滋賀県).(招待講演)
  • Year and Date: 2011-11-02
• [Presentation] Physical properties of bulk-superconducting CuxBi2Se3 (2011)
  • Author(s): Kouji SEGAWA
  • Organizer: International Workshop for Young Researchers on Topological Quantum Phenomena in Condensed Matter with Broken Symmetries
  • Place of Presentation: ホテルラフォーレ琵琶湖,滋賀,日本(招待講演)
  • Year and Date: 2011-11-02
• [Presentation] Physical properties of bulk-superconducting CuxBi2Se3 (2011)
  • Author(s): K. Segawa
  • Organizer: 24th International Conference on Superconductivity(ISS2011)
  • Place of Presentation: タワーホール船堀(東京都).(招待講演)
  • Year and Date: 2011-10-25
• [Presentation] トポロジカル超伝導体CuxBi2Se3における常伝導状態: Cu, Bi, Se-NMR (2011)
  • Author(s): 岩瀬文達, 李政, 鄭国慶, M. Kriener, 瀬川耕司, Z. Ren, 安藤陽一
  • Organizer: 日本物理学会2011年秋季大会
  • Place of Presentation: 富山大学(富山県)
  • Year and Date: 2011-09-23
• [Presentation] Cu_xBi_2Se_3のトンネル分光実験 (2011)
  • Author(s): 佐々木聡, M. Kriener, 和田祥平, 瀬川耕司, 安藤陽一
  • Organizer: 日本物理学会2011年秋季大会
  • Place of Presentation: 富山大学(富山県)
  • Year and Date: 2011-09-23
• [Presentation] トポロジカル絶縁体を舞台とした超伝導物質の輸送特性 (2011)
  • Author(s): 瀬川耕司, M. Kriener, 和田祥平, 佐々木聡, Z. Ren, 安藤陽一
  • Organizer: 日本物理学会2011年秋季大会
  • Place of Presentation: 富山大学(富山県)
  • Year and Date: 2011-09-23
• [Presentation] トポロジカル絶縁体を舞台とした超伝導物質の輸送特性 (2011)
  • Author(s): 瀬川耕司
  • Organizer: 日本物理学会2011年秋季大会
  • Place of Presentation: 富山大学
  • Year and Date: 2011-09-23
• [Presentation] トポロジカル絶縁体を舞台とした超伝導物質Cu_xBi_2Se_3の電気化学的インターカレーションによる合成 (2011)
  • Author(s): 和田祥平, M. Kriener, Z. Ren, 瀬川耕司, 安藤陽一
  • Organizer: 日本物理学会2011年秋季大会
  • Place of Presentation: 富山大学(富山県)
  • Year and Date: 2011-09-21
• [Presentation] Physical properties of bulk-superconducting CuxBi2Se3 (2011)
  • Author(s): Kouji Segawa, M. Kriener, Zhi Ren, S. Sasaki and Yoichi Ando
  • Organizer: 26th International Conference on Low Temperature Physics(LT26)
  • Place of Presentation: 北京コンベンションセンター(中国)
  • Year and Date: 2011-08-12
• [Presentation] Physical properties of bulk-superconducting CuxBi2Se3 (2011)
  • Author(s): Kouji SEGAWA
  • Organizer: 26th International Conference on Low Temperature Physics (LT26)
  • Place of Presentation: Beijing, China
  • Year and Date: 2011-08-12
• [Presentation] Physical properties of bulk-superconducting CuxBi2Se3 (2011)
  • Author(s): Kouji Segawa, M. Kriener, Zhi Ren, S. Sasaki and Yoichi Ando
  • Organizer: Gordon Research Conference on Superconductivity
  • Place of Presentation: Waterville valley resort,(米国)
  • Year and Date: 2011-06-08
• [Presentation] Physical properties of bulk-superconducting CuxBi2Se3 (2011)
  • Author(s): Kouji SEGAWA
  • Organizer: Gordon Research Conference on Superconductivity
  • Place of Presentation: Waterville valley resort, USA
  • Year and Date: 2011-06-08
• [Presentation] Physical properties of bulk-superconducting CuxBi2Se3 (2011)
  • Author(s): Kouji SEGAWA
  • Organizer: 24th International Conference on Superconductivity (ISS2011) conductivity
  • Place of Presentation: 船堀タワーホール,東京,日本(招待講演)
  • Year and Date: 2011-06-08
• [Presentation] トポロジカル絶縁体を舞台とした超伝導体CuxBi2Se3の輸送特性 (2011)
  • Author(s): 瀬川耕司, M. Kriener, Z. Ren, 佐々木聡, 安藤陽一
  • Organizer: 日本物理学会第66回年次大会
  • Place of Presentation: 新潟大学(新潟県)[中止だが概要集発行]
  • Year and Date: 2011-03-28
• [Presentation] トポロジカル絶縁体を舞台とした超伝導体Cu_xBi_2Se_3の輸送特性 (2011)
  • Author(s): 瀬川耕司
  • Organizer: 日本物理学会第66回年次大会
  • Place of Presentation: 新潟大学五十嵐キャンパス
  • Year and Date: 2011-03-28
• [Presentation] 両極ドープ系Y1-zLaz(Ba1-xLax) 2Cu3Oyの角度分解光電子分光 (2011)
  • Author(s): 植村渉, 出田真一郎, 西一郎, 吉田鉄平, 藤森淳, 久保田正人, 小野寛太, 瀬川耕司, 安藤陽一
  • Organizer: 日本物理学会第66回年次大会
  • Place of Presentation: 新潟大学(新潟県)[中止だが概要集発行]
  • Year and Date: 2011-03-25
• [Presentation] 両極ドープ系Y_<1-z>La_z(Ba_<1-x>La_x)_2Cu_3O_yの角度分解光電子分光 (2011)
  • Author(s): 植村渉
  • Organizer: 日本物理学会第66回年次大会
  • Place of Presentation: 新潟大学五十嵐キャンパス
  • Year and Date: 2011-03-25
• [Presentation] 両極ドープ系Y_<1-z>La_z(Ba_<1-x>La_x)_2Cu_3O_yの角度分解光電子分光 (2011)
  • Author(s): 植村渉
  • Organizer: 第24回日本放射光学会年会・放射光科学合同シンポジウム
  • Place of Presentation: つくば国際会議場
  • Year and Date: 2011-01-10
• [Presentation] トポロジカル絶縁体候補物質タリウム系三元カルコゲナイド単結晶の輸送特性 (2010)
  • Author(s): 瀬川耕司
  • Organizer: 日本物理学会2010年秋季大会
  • Place of Presentation: 大阪府立大学
  • Year and Date: 2010-09-25
• [Presentation] トポロジカル絶縁体候補物質タリウム系三元カルコゲナイド単結晶の輸送特性 (2010)
  • Author(s): 瀬川耕司, 江藤数馬, 安藤陽一
  • Organizer: 日本物理学会2010年秋季大会
  • Place of Presentation: 大阪府立大学(大阪府)
  • Year and Date: 2010-09-24