Fabrication of a steady-load control system for NMR under high pressure and application to strongly correlated systems

• Project/Area Number: 17340107
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Condensed matter physics II
• Research Institution: Kyoto University
• Principal Investigator: FUJIWARA Naoki Kyoto University, 大学院・人間・環境学研究科, 准教授 (60272530)
• Co-Investigator(Kenkyū-buntansha): UWATOKO Yoshiya 東京大学, 物性研究所, 准教授 (40213524)
• Project Period (FY): 2005 – 2008
• Project Status: Completed (Fiscal Year 2008)
• Budget Amount: ¥16,200,000 (Direct Cost: ¥15,300,000、Indirect Cost: ¥900,000); Fiscal Year 2008: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000); Fiscal Year 2007: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000); Fiscal Year 2006: ¥5,300,000 (Direct Cost: ¥5,300,000); Fiscal Year 2005: ¥7,000,000 (Direct Cost: ¥7,000,000)
• Keywords: 高温超伝導 / 高圧測定 / 核磁気共鳴 / 強相関電子系 / 高圧 / NMR / 酸化物 / 超伝導 / 金属絶縁体転移 / 梯子格子物質 / 圧力誘起超伝導

Research Abstract

ピストンシリンダー型圧力セルにおいて4万気圧まで至達することに成功した。このセルを用いて圧力下で最適条件となる鉄砒素系高温超伝導体LaFeAsO_<1-x>F_xや、梯子格子銅酸化物Sr_2Ca_<12>Cu_<24>O_<41>のNMR測定を行い、超伝導転移点T_Cが高圧下で上昇する機構を解明した。

Research Products

• [Journal Article] NMR and NQR study of pressure-induced superconductivity and the origin of critical-temperature enhancement in the spin-ladder cuprate Sr2Ca12Cu24O41 (2009)
  • Author(s): N. Fujiwara, S. Uchida, Y. Uwatoko, et. al.
  • Journal Title: Phy.Rev. B80 Pages: 100503-100503
  • NAID: 120001700242
• [Journal Article] Local electric properties of ss-Ag0.133V2O5 studied by 51V NMR (2009)
  • Author(s): A. Hisada, N. Fujiwara, et. al.
  • Journal Title: Journal of Phys.Soc.Jpn. 78 Pages: 94705-94705
• [Journal Article] 75As-NMR studies on LaFeAsO1-xFx (x-0.14) under a pressure of 3GPa (2009)
  • Author(s): K. Tatsumi, N. Fujiwara, et. al.
  • Journal Title: Journal of Phys.Soc.Jpn 78 Pages: 23709-23709
  • NAID: 130005437323
• [Journal Article] 75_<As-NMR> studies on LaFeAsO_<1-x>F_x (x-0.14) under a pressure of 3GPa (2009)
  • Author(s): K. Tatsumi, N. Fujiwara, et. al.
  • Journal Title: Journal of Phys. Soc. Jpn 78
  • Peer Reviewed
• [Journal Article] Spin ordering of 3d1 electrons shared within rungs in ladder-type vanadate ss-Ag0.33V2O5 : Nuclear magnetic resonance and zero-field resonance measurements (2008)
  • Author(s): A. Hisada, N. Fujiwara, Y. Uwatoko, et. al.
  • Journal Title: Phys.Rev. B78 Pages: 12402-12402
• [Journal Article] Spin gap of a pressure-induced superconductor Sr2Ca12Cu24 O41 at an optimum pressure of 3.8GPa (2008)
  • Author(s): N. Fujiwara, Y. Uwatoko, et. al.
  • Journal Title: Journal of Physics and Chemistry of Solids 69 Pages: 3171-3171
• [Journal Article] Fabrication of a NiCrAl Pressure Cell and the application to a Two-leg ladder Compound Sr2Ca12Cu24O4 (2008)
  • Author(s): N. Fujiwara, Y. Uwatoko, et. al.
  • Journal Title: Journal of Physics 121 Pages: 122004-122004
• [Journal Article] Fabrication of a NiCrAl Pressure Cell and the application to a Two-leg ladder Compound Sr_2Ca_<12>Cu_<24>O_<41> (2008)
  • Author(s): N. Fujiwara, et. al.
  • Journal Title: Journal of Physics 121 Pages: 122004-122007
  • Peer Reviewed
• [Journal Article] Spin gap of a pressure-induced superconductor Sr_2Ca_<12>Cu_<24>O_<41> at an optimum pressure of 3.8GPa (2008)
  • Author(s): N. Fujiwara, et. al.
  • Journal Title: Journal of Physics and Chemistry of Solids 69 Pages: 3171-3173
  • Peer Reviewed
• [Journal Article] Spin ordering of 3d^1 electrons shared within rungs in ladder-type vanadate Ag_<1/3>V_2O_5 : Nuclear magnetic resonance and zero-field resonance measurements (2008)
  • Author(s): Hisada, N. Fujiwara, et. al.
  • Journal Title: Phys. Rev. B 78
  • Peer Reviewed
• [Journal Article] Pressure effect on nuclear quadrupole resonance and ruby fluorescence in a NiCrAl pressure cell (2007)
  • Author(s): N. Fujiwara, Y. Uwatoko, et. al.
  • Journal Title: Journal of Physics : Condensed Matter 19 Pages: 425203-425203
• [Journal Article] Pressure efficiency of a NiCrAl pressure cell measured by NQR and Ruby fluorescence (2007)
  • Author(s): N. Fujiwara, Y. Uwatoko, et. al.
  • Journal Title: Journal of Phys.Soc.Japan 76
• [Journal Article] Fabrication and Efficiency Evaluation of a Hybrid NiCrAl Pressure cell up to 4 GPa (2007)
  • Author(s): N. Fujiwara, Y. Uwatoko, et. al.
  • Journal Title: Review of Scientific Instruments 78 Pages: 73905-73905
  • NAID: 120006645297
• [Journal Article] NMR studies in quasi-1D pressure -induced superconductor ss-A0.33V2O5 (2007)
  • Author(s): A. Hisada, N. Fujiwara, Y. Uwatoko, et. al.
  • Journal Title: Journal of Magnetism & Magnetic Materials 310 Pages: 893-893
• [Journal Article] Fabrication and Efficiency Evaluation of a Hybrid NiCrAl Pressure cell up to 4 GPa (2007)
  • Author(s): N. Fujiwara
  • Journal Title: Review of Scientific Instruments 78
  • NAID: 120006645297
  • Peer Reviewed
• [Journal Article] Pressure effect on nuclear quadrupole resonance and ruby fluorescence in a NiCrAl pressure cell (2007)
  • Author(s): N. Fujiwara
  • Journal Title: Journal of Physics: Condensed Matter, 19(2007)425203 19 Pages: 425203-425207
  • Peer Reviewed
• [Journal Article] NMR studies in quasi-1D pressure-induced superconductor β-A_<0.33>V_2O_5 (2007)
  • Author(s): A. Hisada
  • Journal Title: Journal of Magnetic Material & Magnetizm 310 Pages: 893-894
  • Peer Reviewed
• [Journal Article] Pressure efficiency of a NiCrAl pressure cell measured by NQR and Ruby fluorescence (2007)
  • Author(s): N. Fujiwara
  • Journal Title: Journal of Phys. Soc. Japan, 76 Suppl. A 210(2007) 76
  • Peer Reviewed
• [Journal Article] Electrical resistivity and tunneling anomalies in CeCuAs2 (2005)
  • Author(s): EV. Sampathkumaran, N. Fujiwara, Y. Uwatoko, et. al.
  • Journal Title: Physica B-Condensed Matter 359 Pages: 108-108
• [Journal Article] Superconductivity and spin gap in the spin-ladder cuprate, Sr2Ca12Cu24O41, (2005)
  • Author(s): N. Fujiwara, Y. Uwatoko, et. al.
  • Journal Title: Physica B-Condensed Matter 359 Pages: 430-430
• [Journal Article] Pressure-induced superconductivity in the spin-ladder cuprate (2005)
  • Author(s): N. Fujiwara, Y. Uwatoko, et. al.
  • Journal Title: Journal of Physics-Condensed Matter 17
• [Journal Article] Origin of critical-temperature enhancement of an iron-based high-Tc superconductor
  • Author(s): T. Nakano, N. Fujiwara, et. al.
  • Journal Title: NMR study under high pressure Pages: 909-318
• [Journal Article] 75As-Nuclear Magnetic Relaxation on LaFeAsO1-xFx under Pressure
  • Author(s): N. Fujiwara, et. al.
  • Journal Title: Physica C
• [Journal Article] Superconductivity of LaFeAsO1-xFx under high pressure studied using NMR
  • Author(s): N. Fujiwara, et. al.
  • Journal Title: Journal of Physics
• [Journal Article] Nuclear magnetic relaxation in a quasi-one-dimmensional conductor ss-Ag0.33V2O5
  • Author(s): A. Hisada, N. Fujiwara, et. al.
  • Journal Title: Journal of Physics
• [Journal Article] Fabrication of a barrel-type Bridgman anvil cell
  • Author(s): A. Hisada, N. Fujiwara, N. Mari
  • Journal Title: Journal of Physics
• [Presentation] 75As-Nuclear Magnetic Relaxation on LaFeAsO1-xFx under Pressure (2009)
  • Author(s): N. Fujiwara
  • Organizer: M2S
  • Place of Presentation: Tokyo, Japan
  • Year and Date: 2009-09-07
• [Presentation] Super-conductivity of LaFeAsO1-xFx under high pressure studied using NMR (2009)
  • Author(s): N. Fujiwara
  • Organizer: ICM 2009
  • Place of Presentation: Karlsruhe, German
  • Year and Date: 2009-07-27
• [Presentation] LaFeAsO_<1-x>F_x(x=0.14)の高圧下NMR (2009)
  • Author(s): 辰巳健一郎(修士2回生)
  • Organizer: 日本物理学会
  • Place of Presentation: 立教大学
  • Year and Date: 2009-03-30
• [Presentation] LaFeAsO_<1-x>F_x (x=0.08)の高圧下を含むAs核NMR (2009)
  • Author(s): 中野達也(修士1回生)
  • Organizer: 日本物理学会
  • Place of Presentation: 立教大学
  • Year and Date: 2009-03-30
• [Presentation] 8GPa級NMR用小型ブリッジマンアンビル装置の開発 (2009)
  • Author(s): 久田旭彦(博士3年)
  • Organizer: 日本物理学会
  • Place of Presentation: 立教大学
  • Year and Date: 2009-03-28
• [Presentation] 銅酸化物圧力誘起超伝導体12-24-41系における3-4万気圧下微小磁場での核磁気共鳴 (2008)
  • Author(s): 藤原直樹
  • Organizer: 日本物理学会
  • Place of Presentation: 岩手大学
  • Year and Date: 2008-09-22
• [Presentation] LaOFFeAs系超伝導体の高圧下(3万気圧級) NMR (インフォーマルミーティング) (2008)
  • Author(s): 藤原直樹
  • Organizer: 日本物理学会
  • Place of Presentation: 岩手大学
  • Year and Date: 2008-09-21
• [Presentation] 75As-NMR studies on LaFeAs01-xFx under a pressure of 3GPa (2008)
  • Author(s): N. Fujiwara
  • Organizer: ISAQM
  • Place of Presentation: Tokyo, Japan
• [Presentation] 擬一次元圧力誘起超伝導体β-Ag0.33V2O5の核磁気共鳴測定による磁気構造解析 (2007)
  • Author(s): 久田旭彦
  • Organizer: 日本物理学会
  • Place of Presentation: 北海道大学
  • Year and Date: 2007-09-21
• [Presentation] 定荷重4万気圧NMR装置の開発とスピンラダー系圧力誘起超伝導体Sr_2Ca_<12>Cu_<24>O_<41>への適用 (2007)
  • Author(s): 藤原直樹
  • Organizer: 日本物理学会
  • Place of Presentation: 鹿児島大学
  • Year and Date: 2007-03-19
• [Presentation] Fabrication of a NiCrAl Pressure Cell and the application to a Two-Leg Ladder Compound Sr2Ca72Cu24O41 (2007)
  • Author(s): N. Fujiwara
  • Organizer: AIRAPT
  • Place of Presentation: Catania, Italy
• [Presentation] Spin gap of a pressure-induced superconductor Sr2Ca72 Cu24O41 at an optimum pressure of 3.8 GPa (2007)
  • Author(s): N. Fujiwara
  • Organizer: ICSNS
  • Place of Presentation: Sendai, Japan
• [Presentation] Pressure effect on NQR and ruby rescence in a NiCrAl pressure cell (2006)
  • Author(s): N. Fujiwara
  • Organizer: ACHPR
  • Place of Presentation: Lijiang, China
  • Year and Date: 2006-10-16
• [Presentation] Pressure efficiency of a NiCrAl pressure cell measured by NQR and Ruby fluorescence (2006)
  • Author(s): N. Fujiwara
  • Organizer: ICM Satellite Workshop
  • Place of Presentation: Fukuoka, Japan
  • Year and Date: 2006-08-26
• [Presentation] 高圧下におけるLaFeAsO1-xFx (x=0.05) のAs核NMR
  • Author(s): 中野達也, 辰巳健一郎, 藤原直樹, 他
  • Organizer: 2009年秋の分科会
• [Presentation] LaFeAsOの高圧下NMR
  • Author(s): 辰巳健一郎, 中野達也, 藤原直樹, 他
  • Organizer: 2009年秋の分科会
• [Presentation] 小型ブリッジマンアンビル装置を用いたNMR/NQR
  • Author(s): 久田旭彦, 藤原直樹
  • Organizer: 2009年秋の分科会
• [Presentation] LaFeAsO1-xFx (x=0.08) の高圧下を含むAs核NMR
  • Author(s): 中野達也, 藤原直樹, 他
  • Organizer: 2009年春の年会
• [Presentation] LaFeAsO1-xFx (x=0.14) の高圧 (3万気圧) 下NMR
  • Author(s): 辰巳健一郎, 藤原直樹, 他
  • Organizer: 2009年春の年会
• [Presentation] 8GPa級NMR用小型ブリッジマンアンビル装置の開発
  • Author(s): 久田旭彦, 藤原直樹
  • Organizer: 2009年春の年会
• [Presentation] 銅酸化物圧力誘起超伝導体12-24-41系における3-4万気圧下, 微小磁場での核磁気極共鳴
  • Author(s): 藤原直樹, 他
  • Organizer: 2008年秋の分科会
• [Presentation] 擬一次元圧力誘起超伝導体・-Ag0.33V2O5の高圧下NMR
  • Author(s): 久田旭彦, 藤原直樹, 上床美也, 他
  • Organizer: 2008年春の年会
• [Presentation] 梯子格子銅酸化物Sr2Ca12Cu24O41の圧力下核四重極共鳴
  • Author(s): 藤原直樹, 上床美也, 他
  • Organizer: 2008年春の年会
• [Presentation] 定荷重4万気圧NMR装置の開発とスピンラダー系圧力誘起超伝導体Sr2Ca12Cu24041への適
  • Author(s): 藤原直樹, 上床美也, 他
  • Organizer: 2007年秋の分科会
• [Presentation] 擬一次元圧力誘起超伝導体・-Ag0.33V2O5の核磁気共鳴測定による磁気構造解析
  • Author(s): 久田旭彦, 藤原直樹, 上床美也, 他
  • Organizer: 2007年春の年会
• [Presentation] 梯子格子銅酸化物14-24-41系の4万気圧でのスピンギャッ
  • Author(s): 藤原直樹, 上床美也, 他
  • Organizer: 2007年春の年会
• [Presentation] 擬一次元圧力誘起超伝導体・-AgV6O15の圧力下NMR
  • Author(s): 久田旭彦, 藤原直樹, 上床美也, 他
  • Organizer: 2006年秋の分科会
• [Presentation] 擬一次元圧力誘起超伝導体・-Ag0.33V2O5の常圧でのNMR
  • Author(s): 久田旭彦, 藤原直樹, 上床美也, 他
  • Organizer: 2006年春の年会
• [Presentation] NiCrAl高圧セルの4万気圧までの圧力効率測定 : ルビー蛍光法とCu2OのNQR
  • Author(s): 藤原直樹, 上床美也, 他
  • Organizer: 2006年高圧討論会
• [Book] 固体物理(4GPa (4万気圧) 発生を目指したハイブリッド式NiCrAl圧力セルの製作と発生圧力決定法) (2007)
  • Author(s): 藤原直樹, 上床美也, 他
  • Total Pages: 613
• [Book] 磁気測定-NMR (酸化物)(「高圧ハンドブック」毛利信男編) (2007)
  • Author(s): 藤原直樹, 他
  • Publisher: 丸善
• [Book] 固体物理 (2007)
  • Author(s): 藤原 直樹
  • Total Pages: 7
  • Publisher: アグネ出版社
• [Remarks]
  • URL: http://www.fujiwara.h.kyoto-u.ac.jp/Epaper.html
• [Remarks]
  • URL: http://www.fujiwara.h.kyoto-u.ac.jp/