Spin Singlet Formation from S = 1/2 Tetrahedral Clusters (2009)
Waki, T., Kajinami, Y., Tabata, Y., Yoshida, M., Takigawa, M., Watanabe, I., ...
Muon spin relaxation ($\mu$SR) and nuclear magnetic resonance (NMR) experiments revealed that the spin singlet state with an excitation gap of $\sim$200 K is realized from $S = 1/2$ Nb$_4$...
Spontaneous formation of a superconducting and antiferromagnetic hybrid state in SrFe2As2 (2009)
Kitagawa, K., Katayama, N., Gotou, H., Yagi, T., Ohgushi, K., Matsumoto, T., ...
Competition between antiferromagnetism and superconductivity is ubiquitous in unconventional superconductors such as cuprates, heavy fermions and organic conductors, as is the case for iron...
Reply to the Comment by S.E. Sebastian and N. Harrison (2009)
Levy, F., Sheikin, I., Berthier, Claude, Horvatic, M., Takigawa, M.
no abstract for comments
Phase Diagram and Spin Dynamics in Volborthite with a Distorted Kagome Lattice (2009)
Yoshida, M., Takigawa, M., Yoshida, H., Okamoto, Y., Hiroi, Z.
We report 51V-NMR study on a high-quality powder sample of volborthite Cu3V2O7(OH)2/2H2O, a spin-1/2 Heisenberg antiferromagnet on a distorted kagome lattice formed by isosceles triangles. In the...
Reply to the Comment by S.E. Sebastian and N. Harrison (2009)
Levy, F., Sheikin, I., Berthier, Claude, Horvatic, M., Takigawa, M.
no abstract for comments
Reply to the Comment by S.E. Sebastian and N. Harrison (2009)
Levy, F., Sheikin, I., Berthier, Claude, Horvatic, M., Takigawa, M.
no abstract for comments
P. K. Patra, M. Takigawa, G. S. Dutton, K. Uhse, K. Ishijima, B. R. Lintner, ...
We use an atmospheric general circulation model (AGCM) driven chemistry-transport model (ACTM) to simulate the evolution of sulfur hexafluoride (SF6) in the troposphere. The model results are...
K. Yamaji, J. Li, I. Uno, Y. Kanaya, Y. Komazaki, P. Pochanart, ...
The impact of open crop residual burning on O<sub>3</sub>, CO, Black Carbons (BC), and Organic Carbons (OC) concentrations over Central Eastern China (CEC) during the Mount Tai Experiment...
Spin-1/2 kagome compounds: volborthite vs herbertsmithite (2008)
Hiroi, Z, Yoshida, H, Okamoto, Y, Takigawa, M
Two kagome compounds, volborthite Cu3V2O7(OH)2-2H2O and herbertsmithite ZnCu3(OH)6Cl2, are compared in order to derive information about the intrinsic properties of the spin-1/2 kagome...
Antiferromagnetic Nuclear Resonance in the Quasi-Two-Dimensional (CuBr)LaNb2O7 (2008)
Yoshida, M., Ogata, N., Takigawa, M., Kitano, T., Kageyama, H., Ajiro, Y., ...
We report nuclear magnetic resonance (NMR) studies in the antiferromagnetic state of the quasi-two-dimensional (CuBr)LaNb2O7. The NMR spectra at zero magnetic field and 4.2 K indicate a unique Cu and...
High-temperature spin relaxation process in Dy$_2$Ti$_2$O$_7$ probed by $^{47}$Ti-NQR (2008)
Kitagawa, K., Higashinaka, R., Ishida, K., Maeno, Y., Takigawa, M.
We have performed nuclear quadrupole resonance (NQR) experiments on $^{47}$Ti nuclei in Dy$_2$Ti$_2$O$_7$ in the temperature range 70 -- 300 K in order to investigate the dynamics of $4f$ electrons...
Levy, F., Sheikin, I., Berthier, C., Horvatic, M., Takigawa, M., Kageyama, H., ...
We present magnetic torque measurements on the Shastry-Sutherland quantum spin system SrCu$_2$(BO$_3$)$_2$ in fields up to 31~T and temperatures down to 50~mK. A new quantum phase is observed in a...
Levy, F., Sheikin, I., Berthier, C., Horvatic, M., Takigawa, M., Kageyama, H., ...
We present magnetic torque measurements on the Shastry-Sutherland quantum spin system SrCu$_2$(BO$_3$)$_2$ in fields up to 31~T and temperatures down to 50~mK. A new quantum phase is observed in a...
Patra, P.K., Law, R. M., Peters, W., Rödenbeck, C., Takigawa, M., Aulagnier, C., ...
The ability to reliably estimate CO2 fluxes from current in situ atmospheric CO2 measurements and future satellite CO2 measurements is dependent on transport model performance at synoptic and shorter...
Near-ground ozone source attributions and outflow in central eastern China during MTX2006 (2008)
J. Li, Z. Wang, H. Akimoto, K. Yamaji, M. Takigawa, P. Pochanart, ...
A 3-D regional chemical transport model, the Nested Air Quality Prediction Model System (NAQPMS), with an on-line tracer tagging module was used to study the source of the near-ground (<1.5 km...
P. K. Patra, M. Takigawa, G. S. Dutton, K. Uhse, K. Ishijima, B. R. Lintner, ...
We use an atmospheric general circulation model (AGCM) driven Chemistry-Transport Model (ACTM) to simulate the evolution of sulfur hexafluoride (SF<sub>6</sub>) in the atmosphere. The...
J. Li, Z. Wang, H. Akimoto, K. Yamaji, M. Takigawa, P. Pochanart, ...
A 3-D regional chemical transport model, the Nested Air Quality Prediction Model System (NAQPMS), with an on-line tracer tagging module was applied to study the source of the near-ground (<1.5 km...
Transport mechanisms for synoptic, seasonal and interannual SF6 variations in troposphere (2008)
P. K. Patra, M. Takigawa, G. S. Dutton, K. Uhse, K. Ishijima, B. R. Lintner, ...
We use an atmospheric general circulation model (AGCM) driven Chemistry-Transport Model (ACTM) to simulate the evolution of sulfur hexafluoride (SF6) in the atmosphere. The model results are compared...
Levy, F., Sheikin, I., Berthier, C., Horvatic, M., Takigawa, M., Kageyama, H., ...
We present magnetic torque measurements on the Shastry-Sutherland quantum spin system SrCu$_2$(BO$_3$)$_2$ in fields up to 31 T and temperatures down to 50 mK. A new quantum phase is observed in a 1...
Takigawa, M., Matsubara, S., Horvatic, M., Berthier, C., Kageyama, H., Ueda, Y.
We present 11B NMR studies of the 2D frustrated dimer spin system SrCu2(BO3)2 in the field range 27-31 T covering the upper phase boundary of the 1/8 magnetization plateau, identified at 28.4 T. Our...
Magnetic and Structural Studies of the Quasi-Two-Dimensional Spin-Gap System (CuCl)LaNb2O7 (2007)
Yoshida, M., Ogata, N., Takigawa, M., Yamaura, J., Ichihara, M., Kitano, T., ...
We report magnetization, nuclear magnetic resonance (NMR), nuclear quadrupole resonance (NQR), and transmission electron microscopy (TEM) studies on the quasi-two-dimensional spin-gap system...
On the Symmetry of Low-Field Ordered Phase of PrFe4P12 : 31P NMR (2007)
Kikuchi, J., Takigawa, M., Sugawara, H., Sato, H.
We have performed 31P nuclear magnetic resonance (NMR) experiments on the filled skutterudite compound PrFe4P12 to investigate the exotic ordered phase at low temperatures and low magnetic fields....
Site-Selective NMR in the Quasi-1D Conductor beta-Sr0.33V2O5 (2006)
Waki, T., Takigawa, M., Yamauchi, T., Yamaura, J., Ueda, H., Ueda, Y.
We report 51V NMR experiments in the metallic phase of the quasi-one-dimensional (1D) conductor beta-Sr0.33V2O5. The Knight shift and the quadrupole splitting of all six vanadium sites were...
Takigawa, M., Ichioka, M., Kuroki, K., Asano, Y., Tanaka, Y.
This Letter theoretically discusses quasiparticle states and nuclear spin relaxation rates T_1^-1 in the quasi-one-dimensional superconductor (TMTSF)2PF6 under a magnetic field applied parallel to...
NMR Observation of Rattling Phonons in the Pyrochlore Superconductor KOs2O6 (2006)
Yoshida, M., Arai, K., Kaido, R., Takigawa, M., Yonezawa, S., Muraoka, Y., ...
We report nuclear magnetic resonance studies on the beta-pyrochlore oxide superconductor KOs2O6. The nuclear relaxation at the K sites is entirely caused by fluctuations of electric field gradient,...
1/f noise and multifractality in atmospheric-CO2 records (2006)
Patra, Prabir K., Santhanam, M. S., Manimaran, P., Takigawa, M., Nakazawa, T.
We study the fluctuations in the measured atmospheric CO2 records from several stations and show that it displays 1/f noise and multifractality. Using detrended fluctuation analysis and wavelet based...
Fujiyama, S., Takigawa, M., Kikuchi, J., Cui, H-B., Fujiwara, H., Kobayashi, H.
We report results of 77Se NMR frequency shift in the normal state of the organic charge-transfer-salt k-(BETS)2FeBr4 which shows magnetic field-induced superconductivity (FISC). From a simple mean...
Possible Localized Modes in the Uniform Quantum Heisenberg Chains of Sr2CuO3 (2005)
A model of mobile-bond defects is tentatively proposed to analyze the \"anomalies\" observed on the NMR spectrum of the quantum Heisenberg chains of Sr2CuO3. A bond-defect is a local change in the...
Matsubara, S., Kodama, K., Takigawa, M., Hagiwara, M.
We report novel effects of randomness in the S=1 bond-alternating antiferromagnetic chain compound with a dimer-singlet ground state [Ni(N,N'-bis(3-aminopropyl)propane-1,3-diamine(mu-NO2]ClO4...
Lawrence,M. G., Hov,Ø., Beekmann,M., Brandt,J., Elbern,H., Eskes,H., ...
Field-induced effects of anisotropic magnetic interactions in SrCu2(BO3)2 (2005)
Kodama, K., Miyahara, S., Takigawa, M., Horvatić, M., Berthier, C., Mila, F., ...
39K and 87Rb Nuclear Magnetic Resonance in the Pyrochlore Superconductors AOs2O6 (A=K, Rb) (2004)
Arai, K., Kikuchi, J., Kodama, K., Takigawa, M., Yonezawa, S., Muraoka, Y., ...
This paper has been withdrawn by the authors, since a crucial assumption in the analysis of the data was found to be incorrect from the later experiments.
Field-Induced Effects of Anisotropic Magnetic Interactions in SrCu2(BO3)2 (2004)
Kodama, K., Miyahara, S., Takigawa, M., Horvatic, M., Berthier, C., Mila, F., ...
We observed a field-induced staggered magnetization in the 2D frustrated dimer-singlet spin system SrCu2(BO3)2 by 11B NMR, from which the magnitudes of the intradimer Dzyaloshinsky-Moriya interaction...
Kadono, R., Higemoto, W., Koda, A., Larkin, M. I., Luke, G. M., Savici, A. T., ...
The vortex core radius \rv, defined as the peak position of the supercurrent around the vortex, has been determined by muon spin rotation measurements in the mixed state of \lscox for $x=0.13$, 0.15,...
Takigawa, M., Kodama, K., Horvatić, M., Berthier, C., Kageyama, H., Ueda, Y., ...
We report the NMR observation of spin superstructure in the 1/8 magnetization plateau phase of SrCU2(BO3)(2), a quasi-2D dimer singlet spin system, at high magnetic fields near 28 T. The 1/8 phase is...
Kodama, K., Takigawa, M., Horvatić, M., Berthier, C., Kageyama, H., Ueda, Y., ...
Nuclear magnetic resonance (NMR) experiments have been performed on the quasi-two-dimensional quantum spin system SrCu2(BO3)(2). The Cu NMR spectrum in the 1/8-magnetization plateau state at 27.6 T...
Nishida, T, Kubota, S, Kojima, S, Kuboki, T, Nakao, K, Kushibiki, T, ...
Nishida, T, Kubota, S, Kuboki, T, Nakao, K, Kushibiki, T, Tabata, Y, ...
Nishida, K, Doi, H, Shimizu, A, Yorimitsu, M, Takigawa, M, Inoue, H
No abstract available.
Nakanishi, T, Nishida, K, Ohyama, K, Takigawa, M, Inoue, H
No abstract available.
Field-Induced Magnetic Order and Simultaneous Lattice Deformation in TlCuCl3 (2003)
Vyaselev, O., Takigawa, M., Vasiliev, A., Oosawa, A., Tanaka, H.
We report the results of Cu and Cl nuclear magnetic resonance experiments (NMR) and thermal expansion measurements in magnetic fields in the coupled dimer spin system TlCuCl3. We found that the...
Nishida, T, Kubota, S, Kojima, S, Kuboki, T, Kushibiki, T, Tabata, Y, ...
Fujiyama, S., Takigawa, M., Horii, S.
We report nuclear quadrupole resonance (NQR) studies on the chain Cu sites of PrBa$_{2}$Cu$_{4}$O$_{8}$, a quasi-one-dimensional conductor with a nearly quarter-filled band. The nuclear spin-lattice...
Spin dynamics and antiferromagnetic order in PrBa2Cu4O8 studied by Cu nuclear respnance (2002)
Fujiyama, S., Takigawa, M., Suzuki, T., Yamada, N., Horii, S., Yamada, Y.
Results of the nuclear resonance experiments for the planar Cu sites in PrBa2Cu4O8 are presented. The NMR spectrum at 1.5 K in zero magnetic field revealed an internal field of 6.1 T, providing...
Magnetic Superstructure in the Two-Dimensional Quantum Antiferromagnet SrCu2(BO3)2 (2002)
Kodama, K., Takigawa, M., Horvatic, M., Berthier, C., Kageyama, H., Ueda, Y., ...
We report the observation of magnetic superstructure in a magnetization plateau state of SrCu2(BO3)2, a frustrated quasi-two-dimensional quantum spin system. The Cu and B nuclear magnetic resonance...
Cu nuclear spin-spin coupling in the dimer singlet state in SrCu2(BO3)2 (2002)
Kodama, K., Yamazaki, J., Takigawa, M., Kageyama, H., Onizuka, K., Ueda, Y.
We report results of nuclear magnetic resonance (NMR) experiments in SrCu2(BO3)2, a quasi two-dimensional spin system with a singlet ground state. When magnetic field is applied along the c-axis,...
Magnetic superstructure in the two-dimensional quantum antiferromagnet SrCu2(BO3)2 (2002)
Kodama, K., Takigawa, M., Horvatić, M., Berthier, C., Kageyama, H., Ueda, Y., ...
We report the observation of magnetic superstructure in a magnetization plateau state of SrCu2(BO3)(2), a frustrated quasi two-dimensional quantum spin system. The Cu and B nuclear magnetic resonance...
Spin-1/2 Kagome Like Lattice in Volborthite Cu3V2O7(OH)2-H2O (2001)
Hiroi, Z., Hanawa, M., Kobayashi, N., Nohara, M., Takagi, H., Kato, Y., ...
A novel cuprate Volborthite, Cu3V2O7(OH)2-2H2O, containing an S-1/2 (Cu 2+ spin) kagome-like lattice is studied by magnetic susceptibility, specific heat, and 51 V NMR measurements. Signs for neither...
Nuclear Spin Relaxation in Hole Doped Two-Leg Ladders (2000)
Fujiyama, S., Takigawa, M., Motoyama, N., Eisaki, H., Uchida, S.
The nuclear spin-lattice relaxation rate ($1/T_{1}$) has been measured in the single crystals of hole doped two-leg ladder compounds Sr$_{14-x}$Ca$_{x}$Cu$_{24}$O$_{41}$ and in the undoped parent...
Possible Localized Modes in the Uniform Quantum Heisenberg Chains of Sr2CuO3 (2000)
A model of mobile-bond defects is tentatively proposed to analyze the "anomalies" observed on the NMR spectrum of the quantum Heisenberg chains of Sr2CuO3. A bond-defect is a local change in the...
Possible Localized Modes in the Uniform Quantum Heisenberg Chains of Sr2CuO3 (2000)
A model of mobile-bond defects is tentatively proposed to analyze the \"anomalies\" observed on the NMR spectrum of the quantum Heisenberg chains of Sr2CuO3. A bond-defect is a local change in the...
Possible Localized Modes in the Uniform Quantum Heisenberg Chains of Sr2CuO3 (2000)
A model of mobile-bond defects is tentatively proposed to analyze the \"anomalies\" observed on the NMR spectrum of the quantum Heisenberg chains of Sr2CuO3. A bond-defect is a local change in the...
Nuclear spin-spin coupling in La_{2-x}Sr_{x}CuO_{4} studied by stimulated echo decay (1999)
Fujiyama, S., Takigawa, M., Ueda, Y., Suzuki, T., Yamada, N.
We have performed copper NQR experiments in high temperature superconductors YBa_{2}Cu_{4}O_{8}, YBa_{2}Cu_{3}O_{7}, and La_{2-x}Sr_{x}CuO_{4} (x=0.12 and 0.15), using the stimulated echo technique....
Takigawa, M., Starykh, O. A., Sandvik, A. W., Singh, R. R. P.
The NMR relaxation data on Sr_2CuO_3 [Phys. Rev. Lett. 76, 4612 (1996)] are reexamined and compared with the analytic theory of the dynamic susceptibility in the S=1/2 antiferromagnetic Heisenberg...
Kubo, K, Fujiyoshi, T, Yokoyama, M M, Kamei, K, Richt, J A, Kitze, B, ...
Borna disease virus (BDV) infection has been suspected to be a possible etiological factor in human psychiatric disorders and recently in chronic fatigue syndrome. Evidence of the correlation of BDV...
Takashiba, S, Takigawa, M, Takahashi, K, Myokai, F, Nishimura, F, Chihara, T, ...
Inflammatory mediators produced by cells in the gingiva have been implicated in the initiation and progression of periodontal disease, a common infectious disease. In this study, we examined the...
Suzuki, F, Takase, T, Takigawa, M, Uchida, A, Shimomura, Y
Growth cartilage cells were isolated from the ribs of young rats and cultured at high cell density in Ham's F-12 medium supplemented with 10% fetal calf serum. During 7 days, glycosaminoglycans and...
Takigawa, M, Ishida, H, Takano, T, Suzuki, F
The activity of ornithine decarboxylase (OD-Case:L-ornithine carboxy-lyase, EC 4.1.1.17) in rabbit costal chondrocytes in culture increased markedly after addition of parathyroid hormone (PTH),...
Higuti, T, Takigawa, M, Kotera, Y, Oka, H, Uchida, J, Arakaki, R, ...
Studies on anisotropic inhibitors, a unique type of inhibitor of energy transduction in oxidative phosphorylation, suggested that redox reactions generate two kinds of negative charges on the outer...
Proposal for a unified CCN nomenclature
Brigstock, D R, Goldschmeding, R, Katsube, K-i, Lam, S C-T, Lau, L F, Lyons, K, ...
A proposal is put forth to unify the nomenclature of the CCN family of secreted, cysteine rich regulatory proteins. In the order of their description in the literature, CCN1 (CYR61), CCN2 (CTGF),...
Kubo, K, Fujiyoshi, T, Yokoyama, M M, Kamei, K, Richt, J A, Kitze, B, ...
Borna disease virus (BDV) infection has been suspected to be a possible etiological factor in human psychiatric disorders and recently in chronic fatigue syndrome. Evidence of the correlation of BDV...
Takashiba, S, Takigawa, M, Takahashi, K, Myokai, F, Nishimura, F, Chihara, T, ...
Inflammatory mediators produced by cells in the gingiva have been implicated in the initiation and progression of periodontal disease, a common infectious disease. In this study, we examined the...
Suzuki, F, Takase, T, Takigawa, M, Uchida, A, Shimomura, Y
Growth cartilage cells were isolated from the ribs of young rats and cultured at high cell density in Ham's F-12 medium supplemented with 10% fetal calf serum. During 7 days, glycosaminoglycans and...
Takigawa, M, Ishida, H, Takano, T, Suzuki, F
The activity of ornithine decarboxylase (OD-Case:L-ornithine carboxy-lyase, EC 4.1.1.17) in rabbit costal chondrocytes in culture increased markedly after addition of parathyroid hormone (PTH),...
Higuti, T, Takigawa, M, Kotera, Y, Oka, H, Uchida, J, Arakaki, R, ...
Studies on anisotropic inhibitors, a unique type of inhibitor of energy transduction in oxidative phosphorylation, suggested that redox reactions generate two kinds of negative charges on the outer...
Proposal for a unified CCN nomenclature
Brigstock, D R, Goldschmeding, R, Katsube, K-i, Lam, S C-T, Lau, L F, Lyons, K, ...
A proposal is put forth to unify the nomenclature of the CCN family of secreted, cysteine rich regulatory proteins. In the order of their description in the literature, CCN1 (CYR61), CCN2 (CTGF),...
Takahashi, K., Kubo, T., Arai, Y., Kitajima, I., Takigawa, M., Imanishi, J., ...
OBJECTIVE—To clarify the effect of pressure on the expressions of proteoglycan core protein and metabolism related cytokines in a chondrocyte-like cell line, HCS-2/8. METHODS—HCS-2/8 cells were...
Sekine, T, Masuko-Hongo, K, Matsui, T, Asahara, H, Takigawa, M, Nishioka, K, ...
OBJECTIVE—To investigate whether autoimmunity to YKL-39, a recently cloned cartilage protein, occurs in patients with rheumatoid arthritis (RA). METHODS—Autoantibody to YKL-39 was assayed by...
Keratolysis in a patient with pemphigus vulgaris
SUAMI, M., KATO, M., KOIDE, K., USAMI, Y., HATA, N., MACHIDA, H., ...
Takigawa, M, Tamamori, T, Horiguchi, D, Sakamoto, T, Yamada, M, Yoshioka, A, ...
Cells expressing Fc receptors for IgE (Fc epsilon RII) were identified in the peripheral blood from patients with atopic dermatitis and with eczematous dermatitis, and normal non-atopic subjects by...
Sakamoto, T, Nakayama, F, Tamamori, T, Takigawa, M
In vitro Fc epsilon RII expression was examined in patients with atopic dermatitis, those with non-atopic eczematous dermatitis and normal individuals following stimulation of peripheral blood cells...
Seo, N, Tokura, Y, Matsumoto, K, Furukawa, F, Takigawa, M
Sézary syndrome (SzS) is the leukaemic variant of cutaneous T cell lymphoma (CTCL), whose malignant T cells are of the Th2 type in most cases. In this study we investigated the tumouricidal activity...
Furukawa, F, Itoh, T, Wakita, H, Yagi, H, Tokura, Y, Norris, D A, ...
Keratinocyte cytotoxicity is an important component of the immunopathology of photosensitive lupus erythematosus, and antibody-dependent cell-mediated cytotoxicity (ADCC) has been shown to be an...
Seo, N, Tokura, Y, Ishihara, S, Takeoka, Y, Tagawa, S, Takigawa, M
Recent studies have revealed the existence of a distinct type of NK cell leukaemia of the juvenile type, which presents with hypersensitivity to mosquito bites (HMB) as an essential clinical...