Mesoscopic Phase Coherence in a Quantum Spin Fluid (2008)
Xu, Guangyong, Broholm, C., Soh, Yeong-Ah, Aeppli, G., DiTusa, J. F., Chen, Ying, ...
Mesoscopic quantum phase coherence is important because it improves the prospects for handling quantum degrees of freedom in technology. Here we show that the development of such coherence can be...
Ikeda, M., Yoshida, T., Fujimori, A., Kubota, M., Ono, K., Das, Hena, ...
We have performed angle-resolved photoemission spectroscopy (ARPES) measurements and first-principles electronic structure calculations on the electron-doped high-Tc superconductors Ln1.85Ce0.15CuO4...
Hikita, Y., Kourkoutis, L. Fitting, Susaki, T., Muller, D. A., Takagi, H., Hwang, H. Y.
We observed a strong modulation in the current-voltage characteristics of SrRuO$_3$/Nb:SrTiO$_3$ Schottky junctions by Mn substitution in SrRuO$_3$, which induces a metal-insulator transition in...
X-ray absorption and x-ray magnetic dichroism study on Ca3CoRhO6 and Ca3FeRhO6 (2008)
Burnus, T., Hu, Z., Wu, Hua, Cezar, J. C., Niitaka, S., Takagi, H., ...
Using x-ray absorption spectroscopy at the Rh-L_2,3, Co-L_2,3, and Fe-L_2,3 edges, we find a valence state of Co^2+/Rh^4+ in Ca3CoRhO6 and of Fe^3+/Rh^3+ in Ca3FeRhO6. X-ray magnetic circular...
Crystal-field level inversion in lightly Mn-doped Sr3Ru2O7 (2008)
Hossain, M. A., Hu, Z., Haverkort, M. W., Burnus, T., Chang, C. F., Klein, S., ...
Sr3(Ru1-xMnx)2O7, in which 4d-Ru is substituted by the more localized 3d-Mn, is studied by x-ray dichroism and spin-resolved density functional theory. We find that Mn impurities do not exhibit the...
Bulk electronic structure of the antiferromagnetic superconducting phase in ErNi2B2C (2007)
Baba, T., Yokoya, T., Tsuda, S., Kiss, T., Shimojima, T., Ishizaka, K., ...
We have performed temperature (T) - dependent laser-photoemission spectroscopy of antiferromagnetic (AF) superconductor ErNi2B2C to study the electronic-structure evolution reflecting the interplay...
Hanaguri, T., Kohsaka, Y., Davis, J. C., Lupien, C., Yamada, I., Azuma, M., ...
High-transition-temperature (high-Tc) superconductivity is ubiquitous in the cuprates containing CuO2 planes but each cuprate has its own character. The study of the material dependence of the d-wave...
Structural and magnetic instabilities of La2-xSrxCaCu2O6 (2007)
Ulrich, C., Kondo, S., Reehuis, M., He, H., Bernhard, C., Niedermayer, C., ...
A neutron-scattering study of nonsuperconducting La2-xSrxCaCu2O6 (x=0 and 0.2), a bilayer copper oxide without CuO chains, has revealed an unexpected tetragonal-to-orthorhombic transition with a...
Lake, B., Ronnow, H. M., Christensen, N. B., Aeppli, G., Lefmann, K., McMorrow, D. F., ...
One view of the high-transition-temperature (high-T-c) copper oxide superconductors is that they are conventional superconductors where the pairing occurs between weakly interacting quasi-particles...
Field-induced antiferromagnetism in the high-temperature superconductor La2-xSrxCuO4 (2007)
Lake, B., Mason, T. E., Aeppli, G., Lefmann, K., Christensen, N. B., McMorrow, D. F., ...
Vortex magnetism in the high-temperatures superconductor La2-xSrxCuO4 (2007)
Lake, B., Mason, T. E., Aeppli, G., Lefmann, K., Christensen, N. B., McMorrow, D. F., ...
Static and dynamic spins in superconducting La2-xSrxCuO4: The Riso years (2007)
Lefmann, K., Lake, B., Aeppli, G., Cheong, S. W., Christensen, N. B., Clausen, K. N., ...
One important area of modern condensed matter research is the investigation of the nature of the superconducting cuprates. Much progress in this field has been obtained with the technique of neutron...
Effects of magnetic field on the cuprate high-T-c superconductor La2-xSrxCuO4 (2007)
Lake, B., Aeppli, G., Christensen, N. B., Lefmann, K., McMorrow, D. F., Clausen, K. N., ...
This article discusses neutron scattering measurements on the cuprate, high transition temperature superconductor La2-xSrxCuO4 (LSCO) in an applied magnetic field. LSCO is a type-II superconductor...
Dispersive excitations in the high-temperature superconductor La2-xSrxCuO4 (2007)
Christensen, N. B., McMorrow, D. F., Ronnow, H. M., Lake, B., Hayden, S. M., Aeppli, G., ...
High-resolution neutron scattering experiments on optimally doped La2-xSrxCuO4 (x=0.16) reveal that the magnetic excitations are dispersive. The dispersion is the same as in YBa2Cu3O6.85, and is...
Three-dimensionality of field-induced magnetism in a high-temperature superconductor (2007)
Lake, B., Lefmann, K., Christensen, N. B., Aeppli, G., McMorrow, D. F., Ronnow, H. M., ...
Many physical properties of high-temperature superconductors are two-dimensional phenomena derived from their square-planar CuO2 building blocks. This is especially true of the magnetism from the...
Takagi, H., Soneda, Y., Hatori, H., Zhu, Z.H., Lu, G.Q.
The effects of nitric acid treatment and subsequent heat treatment on the hydrogen adsorption properties of single-walled carbon nanotube (SWCNT) samples were investigated. The hydrogen adsorption...
Ikeda, M., Yoshida, T., Fujimori, A., Kubota, M., Ono, K., Unozawa, K., ...
We have performed an angle-resolved photoemission study of the electron-doped high-Tc superconductors (HTSCs) Sm_{1.85}Ce_{0.15}CuO_{4} (SCCO) and Eu_{1.85}Ce_{0.15}CuO_{4} (ECCO). Around the nodal...
Graf, J., McElroy, K., Zhou, S.Y., Jozwiak, C., Rotenberg, E., ...
A universal high energy anomaly in the single particle spectral function is reported in three different families of high temperature superconductors by using angle-resolved photoemission...
Jefferies, S. P., Holdsworth, R. E., Shimamoto, T., Takagi, H., Lloyd, G. E., Spiers, C. J.
The Median Tectonic Line (MTL) is Japan's largest onshore fault and has been active since the mid-Cretaceous. Foliated cataclastic fault rocks are exceptionally well exposed in the fault core at...
Gauzzi, Andrea, Takashima, S., Takeshita, N., Terakura, C., Takagi, H., Emery, N., ...
We measured the electrical resistivity, $\varrho(T)$, of superconducting CaC$_6$ at ambient and high pressure up to 16 GPa. For $P \leq$8 GPa, we found a large increase of $T_c$ with pressure from...
Gauzzi, Andrea, Takashima, S., Takeshita, N., Terakura, C., Takagi, H., Emery, N., ...
We measured the electrical resistivity, $\varrho(T)$, of superconducting CaC$_6$ at ambient and high pressure up to 16 GPa. For $P \leq$8 GPa, we found a large increase of $T_c$ with pressure from...
An unusual isotope effect in a high-transition-temperature superconductor (2004)
Sasagawa, T., Zhou, S.Y., Graf, J., Takagi, H., ...
In conventional superconductors, the electron pairing that allows superconductivity is caused by exchange of virtual phonons, which are quanta of lattice vibration. For high-transition-temperature...
Dispersive excitations in the high-temperature superconductor La2-xSrxCuO4 (2004)
Christensen, N B, McMorrow, D F, Ronnow, H M, Lake, B, Hayden, S M, Aeppli, G, ...
Static and dynamic spins in superconducting La2-xSrxCuO4: The Riso years (2004)
Lefmann, K, Lake, B, Aeppli, G, Cheong, S W, Christensen, N B, Clausen, K N, ...
Evidence of point nodes in superconducting gap of borocarbide superconductor YNi2B2C (2003)
Kamata, K., Izawa, K., Nakajima, Y., Matsuda, Y., Watanabe, T., Nohara, M., ...
Superconducting gap structure of YNi2B2C determined by thermal conductivity (2003)
Kamata, K., Izawa, K., Nakajima, Y., Matsuda, Y., Watanabe, T., Nohara, M., ...
Structural and magnetic instabilities of La2-xSrxCaCu2O6 (2002)
Ulrich, C., Kondo, S., Reehuis, M., He, H., Bernhard, C., Niedermayer, C., ...
A neutron-scattering study of nonsuperconducting La2- xSrxCaCu2O6 (x=0 and 0.2), a bilayer copper oxide without CuO chains, has revealed an unexpected tetragonal-to-orthorhombic transition with a...
Gap Function with Point Nodes in Borocarbide Superconductor YNi2B2C (2002)
Izawa, K., Kamata, K., Nakajima, Y., Matsuda, Y., Watanabe, T., Nohara, M., ...
To determine the superconducting gap function of YNi2B2C, the c-axis thermal conductivity kappa(zz) was measured in H rotated in various directions. The angular variation of kappa(zz) in H rotated...
Structural and magnetic instabilities of La2-xSrxCaCu2O6 (2002)
Ulrich, C., Kondo, S., Reehuis, M., He, H., Bernhard, C., Niedermayer, C., ...
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Evaluation of Gigabit Ethernet with Java/HORB (1999)
Yasu, Y, Fujii, H, Igarashi, Y, Inoue, E, Kodama, H, Manabe, A, ...
Superconductivity at 28 K in a cuprate with a niobium oxide intermediary layer (1992)
Cava, R.J., Krajewski, J.J., Takagi, H., Zandbergen, H.W., Dover, R.B. Van, Peck Jr., W.F., ...
A new copper oxide based superconductor is reported based on the ordered interleaving of NbO6 or TaO6 octahedra between the apices of copper oxide pyramids. Good bulk superconductivity is observed...
Synthesis and characterization of Ba3(Pb1-xBix)2O7 (1992)
Cava, R.J., Takagi, H., Zandbergen, H.W., Hessen, B., Krajewski, J.J.
The synthesis and initial characterization of a layered perovskite-based lead-bismuth oxide are reported. The phase, Ba3(Pb1-xBix)2O7, for 0≤x≤0.5, is the n=2 member of the Ruddlesden-Popper...
A new type of homologous series in the La–Cu–O system (1991)
Cava, R.J., Siegrist, T., Hessen, B., Krajewski, J.J., Peck Jr., W.F., Batlogg, B., ...
The synthesis and structural characterization of a new type of homologous series of lanthanum cuprates, with the general formula La4+4nCu8+2nO14+8n, is reported. The n = 2 and n = 3 members, La2Cu2O5...
MAGNETIC PROPERTIES OF AMORPHOUS AND CRYSTALLINE Fe-Hf-Si ALLOYS IN THE VICINITY OF Fe3Si (1988)
Kamimori, T., Tanita, E., Takagi, H., Tange, H., Goto, M.
On both amorphous and crystallized Fe75HfxSi25-x alloys (5 ≤ x ≤ 7), µ, TC and Hhf were studied. Distribution of Hhf suggested local precipitation occurs by crystallization. Measurements...
PHASE DIAGRAM OF MAGNETIC ORDER AND SUPERCONDUCTIVITY IN HIGH-Tc YBa2Cu3Ox (1988)
Kitaoka, Y., Ishida, K., Asayama, K., Takagi, H., Iwabuchi, H., Uchida, S.
Nuclear quadrupole resonance (NQR) experiments on tetragonal YBa2Cu3Ox with x = 6.3 and 6.4 reveal a successive magnetic transition associated with the chain site at 20 K well below TN ∼ 400 K,...
µSR STUDIES OF HIGH TC SUPERCONDUCTIVITY (1988)
Uemura, Y., Sternlieb, B., Cox, D., Emery, V., Moodenbaugh, A., Suenaga, M., ...
Recent progress of our µSR measurements on high-TC and related systems is presented. Static magnetic order has been found and studied in La2CuO4, (La2-xSrx)CuO4, YBa2Cu3Ox, YBa2 (Cu3-xCox) O7, as...
MAGNETIC PROPERTIES OF AMORPHOUS AND CRYSTALLINE Fe-Hf-Si ALLOYS IN THE VICINITY OF Fe3Si (1988)
Kamimori, T., Tanita, E., Takagi, H., Tange, H., Goto, M.
On both amorphous and crystallized Fe75HfxSi25-x alloys (5 ≤ x ≤ 7), µ, TC and Hhf were studied. Distribution of Hhf suggested local precipitation occurs by crystallization. Measurements...
PHASE DIAGRAM OF MAGNETIC ORDER AND SUPERCONDUCTIVITY IN HIGH-Tc YBa2Cu3Ox (1988)
Kitaoka, Y., Ishida, K., Asayama, K., Takagi, H., Iwabuchi, H., Uchida, S.
Nuclear quadrupole resonance (NQR) experiments on tetragonal YBa2Cu3Ox with x = 6.3 and 6.4 reveal a successive magnetic transition associated with the chain site at 20 K well below TN ∼ 400 K,...
µSR STUDIES OF HIGH TC SUPERCONDUCTIVITY (1988)
Uemura, Y., Sternlieb, B., Cox, D., Emery, V., Moodenbaugh, A., Suenaga, M., ...
Recent progress of our µSR measurements on high-TC and related systems is presented. Static magnetic order has been found and studied in La2CuO4, (La2-xSrx)CuO4, YBa2Cu3Ox, YBa2 (Cu3-xCox) O7, as...
MAGNETIC PROPERTIES OF AMORPHOUS AND CRYSTALLINE Fe-Hf-Si ALLOYS IN THE VICINITY OF Fe3Si (1988)
Kamimori, T., Tanita, E., Takagi, H., Tange, H., Goto, M.
On both amorphous and crystallized Fe75HfxSi25-x alloys (5 ≤ x ≤ 7), µ, TC and Hhf were studied. Distribution of Hhf suggested local precipitation occurs by crystallization. Measurements...
PHASE DIAGRAM OF MAGNETIC ORDER AND SUPERCONDUCTIVITY IN HIGH-Tc YBa2Cu3Ox (1988)
Kitaoka, Y., Ishida, K., Asayama, K., Takagi, H., Iwabuchi, H., Uchida, S.
Nuclear quadrupole resonance (NQR) experiments on tetragonal YBa2Cu3Ox with x = 6.3 and 6.4 reveal a successive magnetic transition associated with the chain site at 20 K well below TN ∼ 400 K,...
µSR STUDIES OF HIGH TC SUPERCONDUCTIVITY (1988)
Uemura, Y., Sternlieb, B., Cox, D., Emery, V., Moodenbaugh, A., Suenaga, M., ...
Recent progress of our µSR measurements on high-TC and related systems is presented. Static magnetic order has been found and studied in La2CuO4, (La2-xSrx)CuO4, YBa2Cu3Ox, YBa2 (Cu3-xCox) O7, as...
1. The administration of an analgesic dose (10 mg/kg, s.c.) of morphine increased the concentrations of the dopamine metabolites, 3,4-dihydroxyphenylacetic acid (DOPAC) and homovanillic acid (HVA) in...
Nishio, H, Segawa, T, Takagi, H
1. Effects of concanavalin A (Con A) and other lectins on 5-hydroxytryptamine (5-HT) uptake by rabbit blood platelets and on their ultrastructure were studied. 2. Uptake of [3H]-5-HT by platelets was...
1 Administration of an analgesic dose (10 mg/kg, s.c.) of morphine increased the concentration of a noradrenaline metabolite, normetanephrine (NM) in the spinal cord of normal rats. The time course...
Kawabata, A., Nishimura, Y., Takagi, H.
1. Intraplantar injection of carrageenin into the mouse hind paw produced hyperalgesia when measured by the paw pressure test (Randall & Selitto method). 2. Subcutaneous administration of L-arginine...
Kawabata, A., Kasamatsu, K., Umeda, N., Takagi, H.
1. Systemic (s.c. or p.o.) administration of L-threo-3,4-dihydroxyphenylserine (droxidopa, L-threo-DOPS; L-DOPS), a noradrenaline precursor, at a dose-range of 100-800 mg kg-1, produced...
Comparison of antinociception induced by supraspinally administered L-arginine and kyotorphin.
Kawabata, A., Manabe, S., Takagi, H.
1. Intracerebroventricular (i.c.v.) or intracisternal (i.cist.) administration of kyotorphin (KTP), an endogenous Met-enkephalin releaser, at 5 micrograms per mouse, and L-arginine (L-Arg), a...
Kawabata, A., Manabe, S., Manabe, Y., Takagi, H.
1. We investigated the effects of intraplantar (i.pl.) administration of L-arginine and NG-nitro-L-arginine methyl ester (L-NAME) on formalin-induced behavioural nociception in the mouse. 2. L- but...
Kawabata, A., Umeda, N., Takagi, H.
1. Intracerebroventricular (i.c.v.) administration of L-arginine (L-Arg), at 10-100 micrograms per mouse, produced antinociception in mice, as assessed by the tail flick test; this antinociception...