NMR and mu-SR study on the critical phenomena in the Bose-glass phase with Tc=0

2011 Fiscal Year Final Research Report

• Project/Area Number: 21540344
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Condensed matter physics II
• Research Institution: Sophia University
• Principal Investigator: GOTO Takayuki 上智大学, 理工学部, 教授 (90215492)
• Co-Investigator(Kenkyū-buntansha): SUZUKI Takao 国際基督教大学, アーツ・サイエンス研究科, 研究員 (40327862) ; NAKAMURA Tota 芝浦工業大学, 工学部, 教授 (50280871)
• Project Period (FY): 2009 – 2011
• Keywords: ボースグラス / NMR / μSR / 量子スピン系

Research Abstract

(CH_3)_2CHNH_3Cu(Cl_xBr_<1-x>)_3 abbreviated IPACu(Cl_xBr_<1-x>)_3 is a mixed system of spin-gap compounds IPACuCl_3 and IPACuBr_3. This mixed system is reported by macroscopic measurements to show a magnetic order when the value of x is between the quantum critical points(QCPs) 0.44 and 0.87. We have investigated microscopically the ground state of the samples x=0.40, 0.45 and 0.50 which are located near the QCP of xc=0.44, by Muon Spin Relaxation(μSR) and NMR measurements. For x=0.40, mSR measurements in zero and longitudinal fields have shown that the spin fluctuation shows a significant slowing down with decreasing temperature, although the magnetic order does not appear down to T=15 mK, indicating that the ground state is an exotic one rather than a gapped one. For x=0.45 and 0.50, mSR and NMR measurements do not show any magnetic order at low temperatures, indicating that the QCP is larger than the reported value of x_c=0.44.

Research Products

• [Journal Article] ^<19> F-NMR Study on Antiferromagnetic Heisenberg Chain KCuGaF_6 (2011)
  • Author(s): Y. Mori, T. Goto, I. Umegaki and H. Tanaka
  • Journal Title: J. Phys.: Conf. Ser Volume: 302 Pages: 012012
  • Peer Reviewed
• [Journal Article] NMR study on Ru-based quantum spin systems of [Ru(acac)_3] and [{Ru(acac)_2}_2(μ-OEt)_2] (2011)
  • Author(s): S Nakajima, M Masuko, A Oosawa, T. Goto, T. Hashimoto, A. Endo and T. Hayashita
  • Journal Title: J. Phys.: Conf. Ser Volume: 302 Pages: 012008
  • DOI: DOI:10.1088/1742-6596/302/1/012008
  • Peer Reviewed
• [Journal Article] ^<63, 65> Cu-NMR study on Mg-doped quantum spin system TlCu_<1-x> Mg_xCl_3 (2011)
  • Author(s): S Atarashi, T. Goto, M Yamada, F Yamada, A Oosawa, H Tanaka and T Suzuki
  • Journal Title: J. Phys.: Conf. Ser Volume: 302 Pages: 012009
  • DOI: DOI:10.1088/1742-6596/302/1/012009
  • Peer Reviewed
• [Journal Article] Change in magnetic ground states in nonmagnetic-impurity-doped spin-gap systems TlCu_<1-x> Mg_xCl_3 using muon spin relaxation (2011)
  • Author(s): Takao Suzuki, Motoki Yamada, Yasuyuki Ishii, Isao Watanabe, Takayuki Goto, Hidekazu Tanaka, and Kenya Kubo
  • Journal Title: Phys. Rev Volume: B83 Pages: 174436
  • Peer Reviewed
• [Journal Article] ^<63> Cu-NMR study on High-Tc Superconductor La_<2-x> Ba_xCuO_4 (2011)
  • Author(s): Y. Shindo, T. Goto, K. Nakamura, T. Takao, T. Adachi, Y. Koike
  • Journal Title: J. Phys.: Conf. Ser Volume: 302 Pages: 012010
  • DOI: DOI:10.1088/1742-6596/302/1/012010
  • Peer Reviewed
• [Journal Article] Low-energy spin dynamics in randomness-introduced spin-gap systems Tl_<1-x> K_xCuCl_3(0.40〓x〓0.65) probed by zeroand longitudinal-field muon spin relaxation (2010)
  • Author(s): Takao Suzuki, Fumiko Yamada, Motoki Yamada, Takayuki Kawamata, Yasuyuki Ishii, Isao Watanabe, Takayuki Goto, Hidekazu Tanaka
  • Journal Title: Phys. Rev Volume: B82 Pages: 094447
  • DOI: DOI:1103/PhysRevB.82.094447
  • Peer Reviewed
• [Journal Article] Pressure effect on magnetic ground states in Tl(Cu_<1-x> Mg_x) Cl3 with x=0.015 probed by muon-spin-rotation (2010)
  • Author(s): Takao Suzuki, Isao Watanabe, Fumiko Yamada, Yasuyuki Ishii, Kazuki Ohishi, Risdiana, Takayuki Goto, Hidekazu Tanaka
  • Journal Title: J. Phys.: Conf Volume: 200 Pages: 022061
  • DOI: DOI:10.1088/1742-6596/200/2/022061
  • Peer Reviewed
• [Journal Article] μSR and NMR Study on Quantum Critical Point in Quantum Spin Ladder(CH_3)_2CHNH_3Cu(Cl_xBr_<1-x>)_3 (2010)
  • Author(s): S. Nakajima, T. Goto, T. Suzuki, I. Watanabe, H. Manaka and A. Amato
  • Journal Title: J. Phys.: Conf Volume: 200 Pages: 022036
  • DOI: DOI:10.1088/1742-6596/200/2/022036
  • Peer Reviewed
• [Journal Article] μSR study on the ground state of bond-disordered spin gap system(CH_3)_2CHNH_3Cu(Cl<1-x> Br_x)_3(x=0.95, 0.88) (2010)
  • Author(s): T. Goto, T. Suzuki, S. Nakajima, K. Kanada, T. Saito, A. Oosawa, I. Watanabe, H. Luetkens, A. Amato
  • Journal Title: J. Phys.: Conf Volume: 200 Pages: 022011
  • DOI: DOI:10.1088/1742-6596/200/2/022011
  • Peer Reviewed
• [Journal Article] Cu-NMR study of the quasi-onedimensional magnet Cu_3Mo_2O_9 (2010)
  • Author(s): K Doi, T. Hamasaki, H. Kuroe, T. Sekine and T. Goto
  • Journal Title: J. Phys.: Conf Volume: 200 Pages: 022006
  • DOI: DOI:10.1088/1742-6596/200/2/022006
  • Peer Reviewed
• [Journal Article] Pressure-induced new magnetic phase in Tl(Cu_<0.985> Mg_<0.015>) Cl_3 probed by muon spin Rotation (2010)
  • Author(s): Takao Suzuki, Isao Watanabe, Fumiko Yamada, Motoki Yamada, Yasuyuki Ishii, Takayuki Kawamata, Takayuki Goto and Hidekazu Tanaka
  • Journal Title: J. Phys.: Conf Volume: 225 Pages: 012054
  • DOI: DOI:10.1088/1742-6596/225/1/012054
  • Peer Reviewed
• [Journal Article] Evidence for continuous change of spin states between impurity-induced order and pressure-induced order in TlCu_<0.985> Mg_<0.015> Cl_3 probed via muon spin rotation (2009)
  • Author(s): Takao Suzuki, Isao Watanabe, Fumiko Yamada, Yasuyuki Ishii, Kazuki Ohishi, Risdiana, Takayuki Goto and Hidekazu Tanaka
  • Journal Title: Phys. Rev Volume: B80 Pages: 064407
  • DOI: DOI:10.1103/PhysRevB.80.064407
  • Peer Reviewed
• [Journal Article] Spin fluctuations in the ground state of doped quantum spin system TlCu_<1-x> Mg_xCl_3 with x=0.0047 probed by muon-spin-relaxation(・SR) technique (2009)
  • Author(s): Takao Suzuki, Fumiko Yamada, Isao Watanabe, Teiichiro Matsuzaki, Takayuki Goto, Akira Oosawa, Hidekazu Tanaka
  • Journal Title: J. Phys. Soc. Jpn Volume: 78 Pages: 074705
  • Peer Reviewed
• [Journal Article] ^1H-NMR Spin-Lattice Relaxation Rate of the Quantum Spin System(CH_3)_2CHNH_3Cu(Cl_xBr<1-x>)_3 with x=0 and 0.35 (2009)
  • Author(s): Akira Oosawa, Takao Suzuki, Keishi Kanada, Satoshi Kojima, Takayuki Goto, and Hirotaka Manaka
  • Journal Title: J. Phys. Soc. Jpn Volume: 78 Pages: 053702
  • DOI: DOI:10.1143/JPSJ.78.053702
  • Peer Reviewed
• [Journal Article] ^<63/65> Cu-and^<35/37> Cl-NMR Studies of Triplet Localization in the Quantum Spin System NH_4CuCl_3 (2009)
  • Author(s): H. Inoue, S. Tani, S. Hosoya, K. Inokuchi, T. Fujiwara, T. Saito, T. Suzuki, A. Oosawa, T. Goto, M. Fujisawa, H. Tanaka, T. Sasaki, S. Awaji, K. Watanabe, N. Kobayashi
  • Journal Title: Phys. Rev Volume: B79 Pages: 174418
  • DOI: DOI:10.1103/PhysRevB.79.174418
  • Peer Reviewed
• [Journal Article] Quantum critical behavior in highly random systems Tl_<1-x> K_xCuCl_3 probed by zero and longitudinal-fie ld muon-spinrelaxation(μSR) measurements (2009)
  • Author(s): Takao Suzuki, Fumiko Yamada, Takayuki Kawamata, Isao Watanabe, Takayuki Goto and Hidekazu Tanaka
  • Journal Title: Phys. Rev Volume: B79 Pages: 104409
  • DOI: DOI:10.1103/PhysRevB.79.104409
  • Peer Reviewed
• [Journal Article] Bond-randomness effect on the quantum spin system Tl_<1-x> K_xCuCl_3 probed b y muon-spin-relaxation method (2009)
  • Author(s): Takao Suzuki, Fumiko Yamada, Isao Watanabe, Takayuki Goto, Akira Oosawa and Hidekazu Tanaka
  • Journal Title: Physica Volume: B404 Pages: 590-593
  • DOI: DOI:10.1016/j.physb.2008.11.108
  • Peer Reviewed
• [Journal Article] μSR-detected Soft mode toward a Possible Phase Transition in disordered spin gap system(CH_3)_2CHNH_3-Cu(Cl_xBr_<1-x>)_3 (2009)
  • Author(s): T. Goto, T. Suzuki, I. Watanabe, K. Kanada, T. Saito, A. Oosawa, H. Manaka
  • Journal Title: Physica Volume: B404 Pages: 594-596
  • DOI: DOI:10.1016/j.physb.2008.11.107
  • Peer Reviewed
• [Journal Article] Magnetic phase diagram of the S=1/2 antiferromagnetic ladder(CH_3)_2CHNH_3CuCl_3 (2009)
  • Author(s): H. Tsujii, Y. H. Kim, Y. Yoshida, Y. Takano, T. P. Murphy, K. Kanada, T. Saito, A. Oosawa, T. Goto
  • Journal Title: J. Phys., Conf. Ser. Volume: 150 Pages: 042217
  • DOI: DOI:10.1088/1742-6596/150/4/042217
  • Peer Reviewed
• [Journal Article] Field-induced-moment nuclear Coupling for^<59> Co in a Heusler alloy Co_2TiGa (2009)
  • Author(s): Y. Furutani, H. Nishihara, T. Kanomata, K. Kobayashi, R Kainuma, K. Ishida, K. Koyama, K. Watanabe, T. Goto
  • Journal Title: J. Phys., Conf. Ser. Volume: 150 Pages: 042037
  • DOI: DOI:10.1088/1742-6596/150/4/042037
  • Peer Reviewed
• [Journal Article] NMR study on field-induced charge anomaly in Cu_3Mo_2O_9
  • Author(s): K. Misoka, H. Kuroe, D. Doi, T. Hamasaki, T. Sekine, T. Goto, M. Hase, K. Oka, T. Ito, H. Eisaki, T. Sasaki
  • Journal Title: J. Phys.: Conf Volume: (in press) Pages: 4
  • Peer Reviewed
• [Journal Article] ^<11> B-NMR study on Shastry-Sutherland system TbB_4
  • Author(s): T. Muto, K. Kobayashi, T. Goto, A. Oosawa, S. Yoshii, T. Sasaki, N. Kobayashi, S. Michimura, F. Iga, and T Takabatake
  • Journal Title: J. Phys.: Conf Volume: (in press) Pages: 4
  • Peer Reviewed
• [Presentation] 24aPS-92三角スピンチューブ磁性体KCrF_4における^<19> F-NMR II (2012)
  • Author(s): 橋本貴裕, 真中浩貴, 三浦陽子, 後藤貴行
  • Organizer: 物理学会2012年次大会
  • Place of Presentation: 関西学院大学
  • Year and Date: 20120324-27
• [Presentation] 24aPS-85985 S=2籠目格子反強磁性体Cs_2LiMn_3F_<12>の^7Li-NMR (2012)
  • Author(s): 森康彦, 後藤貴行, 臼井泰志, 田中秀数
  • Organizer: 物理学会年次大会
  • Place of Presentation: 関西学院大学
  • Year and Date: 20120324-27
• [Presentation] 24aPS-81量子スピン系Tl(Cu_<1-x> Mg_x) Cl_3(0.0047<x<0.015)におけるミュオンスピン緩和で見た基底状態II (2012)
  • Author(s): 鈴木栄男, 渡邊功雄, 山田基樹, 後藤貴行, 田中秀数, 久保謙哉
  • Organizer: 物理学会年次大会
  • Place of Presentation: 関西学院大学
  • Year and Date: 20120324-27
• [Presentation] 24aPS-68ネマチック状態が期待される一次元競合系Cs_2Cu_2Mo_3O_<12>における^<133> Cs-NMR (2012)
  • Author(s): 星野侑宏, 新聡一郎, 後藤貴行, 長谷正司, 佐々木孝彦
  • Organizer: 物理学会年次大会
  • Place of Presentation: 関西学院大学
  • Year and Date: 20120324-27
• [Presentation] ^A上智大理工,物材機構「24aPS-66ネマチック状態が期待される一次元競合系Rb_2Cu_2Mo_3O_<12>における^<87> Rb-NMR II (2012)
  • Author(s): 新聡一郎, 後藤貴行, 長谷正司
  • Organizer: 物理学会年次大会
  • Place of Presentation: 関西学院大学
  • Year and Date: 20120324-27
• [Presentation] 24aAF-3,^<11> B-NMR測定で見たShastry-Sutherland系TbB_4におけるメタ磁性II (2012)
  • Author(s): 武藤知輝, 小林慶亮, 後藤貴行, 大沢明, 吉居俊輔, 佐々木孝彦, 小林典男, 道村真司, 伊賀文俊, 高畠敏郎
  • Organizer: 物理学会年次大会
  • Place of Presentation: 関西学院大学
  • Year and Date: 20120324-27
• [Presentation] 25aAF-11一次元鎖とダイマーからなる磁性Cu_3Mo_2O_9のCu-NMR IV (2012)
  • Author(s): 晦日慶太, 土井憲一, 浜崎智彰, 黒江晴彦, 後藤貴行, 関根智幸, 佐々木孝彦, 長谷正司, 岡邦彦, 伊藤利充, 永崎洋
  • Organizer: 物理学会年次大会
  • Place of Presentation: 関西学院大学
  • Year and Date: 2012-03-24
• [Presentation] 24pYF-11 CuO_2リボン鎖を持つ1次元競合系Rb_2Cu_2Mo_3O_<12>における^<87> Rb-NMR (2012)
  • Author(s): 新聡一郎, 後藤貴行, 長谷正司
  • Organizer: 物理学会年次大会
  • Place of Presentation: 関西学院大学
  • Year and Date: 2012-03-24
• [Presentation] 24aYH-49ランタン系高温超伝導体La_<2-x> Ba_xCuO_4単結晶における^<63, 65> Cu-NMR V (2012)
  • Author(s): 進藤裕介, 後藤貴行, 中村一也, 高尾智明, 足立匡, 小池洋二
  • Organizer: 物理学会年次大会
  • Place of Presentation: 関西学院大学
  • Year and Date: 2012-03-24
• [Presentation] 三角格子有機磁性体=(BEDT-TTF)_2Cu_2(CN)_3のμsr (2011)
  • Author(s): 後藤貴行, 他
  • Organizer: 金研ワークショップ「電子自由度による強誘電体最前線」
  • Place of Presentation: 東北大金研
  • Year and Date: 20111101-02
• [Presentation] 11B-NMR study on Shastry-Sutherland system TbB4 (2011)
  • Author(s): T. Muto, K. Kobayashi, T. Goto, A. Oosawa, S. Yoshii, T. Sasaki, N. Kobayashi, S. Michimura, F. Iga, and T. Takahata
  • Organizer: 26th International Conference on Low Temperature Physics
  • Place of Presentation: Beijing, China
  • Year and Date: 20110810-17
• [Presentation] Cu-NMR study on dimer-chain complex quantum spin system Cu3Mo2 09 (2011)
  • Author(s): K. Misoka, K. Doi, T. Hamasaki, H. Kuroe, T. Goto, T. Sekine, T. Sasaki, M. Hase, K. Oka, T. Ito, and H. Eisaki
  • Organizer: 26th International Conference on Low Temperature Physics
  • Place of Presentation: Beijing, China
  • Year and Date: 20110810-17
• [Presentation] ^<63> Cu-NMR study on High-Tc Superconductor La_<2-x> Ba_xCuO_4 (2011)
  • Author(s): Y. Shindo, T. Goto, K. Nakamura, T. Takao, T. Adachi, Y. Koike
  • Organizer: International Symposium Nanoscience and Quantum Physics 2011(nanoPHYS' 11)
  • Place of Presentation: International House of Japan(Minato-ku, Tokyo, Japan)
  • Year and Date: 20110126-28
• [Presentation] NMR study on Ru-based quantum spin systems of [Ru (acac) 3] and [{Ru(acac) 2} 2(m-OEt) 2] (2011)
  • Author(s): S. Nakajima, M. Masuko, A. Oosawa, T. Goto, T. Hashimoto, A. Endo, and T. Hayashita
  • Organizer: International Symposium "Nanoscience and Quantum Physics 2011"(nanoPHYS' 11)
  • Place of Presentation: International House of Japan(Minato-ku, Tokyo, Japan)
  • Year and Date: 20110126-28
• [Presentation] 63, 65Cu-NMR study on Mg-doped quantum spin system TlCu1 xMgxCl3 (2011)
  • Author(s): S. Atarashi, T. Goto, H. Tanaka and T. Suzuki
  • Organizer: International Symposium "Nanoscience and Quantum Physics 2011"(nanoPHYS' 11)
  • Place of Presentation: International House of Japan(Minato-ku, Tokyo, Japan)
  • Year and Date: 20110126-28
• [Presentation] ^<19> F,^<69/71> Ga-NMR Study on Antiferromagnetic Heisenberg Chain KCuGaF6 (2011)
  • Author(s): Y. Mori, T. Goto, I. Umegaki, H. Tanaka
  • Organizer: International Symposium "Nanoscience and Quantum Physics 2011"(nanoPHYS' 11)
  • Place of Presentation: International House of Japan(Minato-ku, Tokyo, Japan)
  • Year and Date: 20110126-28
• [Presentation] Kobayashi and T. SasakiμSR Study on Triangular Lattice Magnet=-(BEDTTTF)_2 Cu_2(CN)_3,(6P-088) (2010)
  • Author(s): S. Nakajima T. Goto, T. Suzuki, I. Watanabe, Y. Ishii, F. L. Pratt, N
  • Organizer: International Conference on Science and Technology of Synthetic Metals 2010(ICSM 2010)
  • Place of Presentation: Kyoto International Conference Center in Japan
  • Year and Date: 20100704-09
• [Presentation] NMR Study on Ru-based Quantum Spin Systems of [Ru(acac)_3] and [{Ru(acac)_2}_2(μ-OEt)_2],(5P-145) (2010)
  • Author(s): T. Goto, S. Nakajima, Y. Shindo, T. Hashimoto, A. Endo and T. Hayashita
  • Organizer: International Conference on Science and Technology of Synthetic Metals 2010(ICSM 2010)
  • Place of Presentation: Kyoto International Conference Center in Japan
  • Year and Date: 20100704-09
• [Presentation] ^<11> B-NMR study on Shastry-Sutherland system TbB_4(Poster) (2009)
  • Author(s): K. Kobayashi, T. Goto, et al
  • Organizer: Joint IMR International Symposium High Magnetic Field Spin Science in 100T VI Application of High Magnetic Field for Condensed Matter and Material Science
  • Place of Presentation: IMR, Tohoku Univ.(さくらホール)
  • Year and Date: 20091207-09
• [Presentation] Cu/Si-NMR Study on S=1/2 Low-Dimensional Antiferromagnet Dioptase(Poster) (2009)
  • Author(s): K. Hagiwara, T. Goto, et al
  • Organizer: Joint IMR International Symposium High Magnetic Field Spin Science in 100T VI Application of High Magnetic Field for Condensed Matter and Material Science
  • Place of Presentation: IMR, Tohoku Univ.(さくらホール)
  • Year and Date: 20091207-09
• [Presentation] NMR Study on Field-Induced Magnetic order in Quantum Spin Ladder System(CH_3)_2CHNH_3Cu(Cl_xBr_<1-x>)_3(Poster) (2009)
  • Author(s): S. Nakajima, T. Goto, et al
  • Organizer: Joint IMR International Symposium High Magnetic Field Spin Science in 100T VI Application of High Magnetic Field for Condensed Matter and Material Science
  • Place of Presentation: IMR, Tohoku Univ.(さくらホール)
  • Year and Date: 20091207-09
• [Presentation] Th-A-2.1-03 Cu-NMR study of the quasi-one-dimensional magnet Cu_3Mo_2O_9 (2009)
  • Author(s): K. Doi, T. Goto, et al
  • Organizer: International conference on Magnetism
  • Place of Presentation: Karlsruhe, Germany
  • Year and Date: 20090726-31
• [Presentation] 「Th-A-2.1-33μSR and NMR Study on Quantum Critical Point in Quantum Spin Ladder(CH_3)_2CHNH_3Cu(Cl_xBr_<1-x>)_3 (2009)
  • Author(s): S. Nakajima, T. Goto, et al
  • Organizer: International conference on Magnetism2009
  • Place of Presentation: Karlsruhe, Germany
  • Year and Date: 20090726-31
• [Presentation] Th-A-2.1-37μSR study on the ground state of bond-disordered spin gap system(CH3) 2CHNH3Cu(Cl1-xBrx) 3(x=0.95, 0.88) (2009)
  • Author(s): Takayuki Goto., et al
  • Organizer: International conference on Magnetism
  • Place of Presentation: Karlsruhe, Germany
  • Year and Date: 20090726-31
• [Remarks]
  • URL: http://www.ph.sophia.ac.jp/～goto-ken