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  1. No Access

    Chapter and Conference Paper

    Evaluating the Critical Risk Factors of Reconstruction Urban Renewal Projects: The Developer’s Perspective in China

    The reconstruction urban renewal projects has been confronted with the problems such as social conflict and half-way project. If these problems cannot be addressed properly, not only will the developer suffer ...

    W. D. Wu, G. W. Liu, Z. H. Cai, S. N. Zheng in Proceedings of the 21st International Symp… (2018)

  2. No Access

    Article

    IR spectral characteristics of lithium hydride thin films

    Lithium hydride thin films were deposited by pulsed laser deposition and structurally characterized by means of IR spectra. The pressure of H2 used as a reactive gas was changed and the substrate temperature, sub...

    J.-H. Lei, P.-F. **ng, Y.-J. Tang, W.-D. Wu, F. Wang in Journal of Applied Spectroscopy (2010)

  3. No Access

    Chapter and Conference Paper

    Experimental Verification of A Bi-Directional Driving System for Microfluids

    A bi-directional microfluidic driving system was developed experimentally in this work. The bi-directional driving module combines two individual components for suction and exclusion. The individual components...

    C. P. Jen, W. D. Wu, Y. C. Lin, G. G. Wu, C. C. Chang… in Micro Total Analysis Systems 2002 (2002)

  4. No Access

    Article

    Muon spin relaxation investigation of frustrated antiferromagnetic pyrochlores A2B2O7

    In a system where magnetic ions occupy the vertices of edge or corner sharing triangular units, the natural antiferromagnetic coupling between ions is geometrically frustrated. A wide variety of interesting ma...

    S.R. Dunsiger, R.F. Kiefl, K.H. Chow, B.D. Gaulin, M.J.P. Gingras… in Hyperfine Interactions (1997)

  5. No Access

    Article

    Search for magnetic order in undoped and doped spin‐gap systems by μSR

    We introduce our μSR investigations of spin‐gap systems, such as, (1) a 2‐leg spin‐ladder material SrCu2O3, (2) a Haldane material (S=1 spin‐chain) Y2BaNiO5, (3) a spin‐Peierls material CuGeO3, (4) a spin‐chain# ...

    K. Kojima, A. Keren, L.P. Le, M. Larkin, G.M. Luke, B. Nachumi… in Hyperfine Interactions (1997)

  6. No Access

    Article

    Spin frustration in Y(Sc)Mn2

    The relaxation rate of muon polarization of Y0.97Sc0.03Mn2 with a magnetic lattice composed of corner‐shared tetrahedrons shows a broad peak around 2.5 K indicating a random spin freezing at low temperatures. The...

    M. Mekata, T. Asano, H. Nakamura, M. Shiga, K. Kojima, G.M. Luke… in Hyperfine Interactions (1997)

  7. No Access

    Article

    La2-xSrxCu1-yZnyO4: Tc and ns/m* correlations seen with muon spin rotation

    We report the muon spin rotation experiments on Zn substituted La1-x Srx CuO4, for four zinc concentrations y=0.0,0.0025,0.005,0.01, at strontium concentrations x=0.15,0.20. We find that T_ c in the optimally dop...

    B. Nachumi, A. Keren, K. Kojima, M. Larkin, G.M. Luke, J. Merrin… in Hyperfine Interactions (1997)

  8. No Access

    Article

    Depolarization in reentrant spin glasses: a comparison between neutron and muon probes

    In the amorphous ( Fe1-x Mn_x)75 P16 B_6 Al_3 alloys, muon and neutron depolarization data, combined with the results of small angle neutron scattering, magnetization and Mössbauer spectroscopy, probe the existen...

    I. Mirebeau, M. Hennion, M.J.P. Gingras, A. Keren, K. Kojima… in Hyperfine Interactions (1997)

  9. No Access

    Article

    A comparison of μSR and thermopower in Hg 1:2:0:1 high‐Tc cuprates

    We present the results of μSR measurements of the transverse field relaxation rate below Tc for seven samples of HgBa2 CuO4+\delta, spanning the underdoped, optimally doped, and nominally overdoped regions of the...

    B. Nachumi, A. Keren, K. Kojima, M. Larkin, G.M. Luke, J. Merrin… in Hyperfine Interactions (1997)

  10. No Access

    Article

    Muon spin relaxation in heavy fermion systems

    Heavy fermion systems have received a great deal of study by a wide variety of techniques, includingμSR. In a number of systems, coexisting superconducting and magnetic states have been reported, leading to specu...

    G. M. Luke, A. Keren, L. P. Le, Y. J. Uemura, W. D. Wu, D. Bonn… in Hyperfine Interactions (1994)

  11. No Access

    Article

    Muon spin relaxation measurements in kagomé lattice system SrCr8Ga4O19

    Dynamical spin fluctuations in SrCr8−xGa4+xO19 a frustrated spin system on a kagomé lattice, is examined by the longitudinal field muon spin relaxation technique. This system shows a spin-glass (SG)-like cusp in ...

    A. Keren, L. P. Le, G. M. Luke, W. D. Wu, Y. J. Uemura, Y. Ajiro… in Hyperfine Interactions (1994)

  12. No Access

    Article

    μSR studies in an I2-doped phenylenediamine polymer

    We report μSR studies of the recently synthesized I2-doped phenylenediamine polymer. Longitudinal-field spectra exhibit typical behavior of a spin-glass with a freezing temperatureT g ∼ 100 K and a spontaneous st...

    L. P. Le, A. Keren, G. M. Luke, W. D. Wu, Y. J. Uemura… in Hyperfine Interactions (1994)

  13. No Access

    Article

    Muon spin relaxation studies in frustrated and/or low-dimensional spin systems

    An overview is given on muon spin relaxation (μSR) measurements in frustrated and/or low dimensional spin systems. In the frustrated Kagomé lattice system SrCr8Ga4O19, we observed dynamic spin fluctuations of ∼ 3...

    Y. J. Uemura, A. Keren, L. P. Le, G. M. Luke, B. J. Sternlieb… in Hyperfine Interactions (1994)

  14. No Access

    Article

    Explaining μ+ spin-lattice relaxation in MnF2, belowT N, by scattering function

    A relation between the spin-lattice relaxation rate (1/T 1) of positive muons and the scattering functionS ⊥ T (q,ω) is derived for the antiferromagnet MnF2. ...

    A. Keren, L. P. Le, G. M. Luke, W. D. Wu, Y. J. Uemura in Hyperfine Interactions (1994)

  15. No Access

    Article

    μSR studies in the heavy fermion systems UNi2Al3, UPd2Al3 and U2PtC2

    We have performed Muon Spin Relaxation (μSR) measurements of several heavy fermion systems: UNi2Al3 (single crystal), UPd2Al3 (single crystal) and U2PtC2 (polycrystal). ZF -μSR measurements of UNi2Al3 show magnet...

    W. D. Wu, A. Keren, L. P. Le, G. M. Luke, B. J. Sternlieb… in Hyperfine Interactions (1994)

  16. No Access

    Article

    Magnetic penetration depth in V3Si and LiTi2O4 measured by μSR

    Muon spin relaxation (μSR) studies have been performed in the normal spinel LiTi2O4 and the A-15 superconductor V3Si to measure the magnetic penetration depth λ. The relaxation rateσ(T) ∝ 1/λ2 in field-cooled mea...

    W. D. Wu, A. Keren, L. P. Le, G. M. Luke, B. J. Sternlieb… in Hyperfine Interactions (1994)

  17. No Access

    Article

    Magnetic-field penetration depth in TI2Ba2CuO6+δ in the overdoped regime

    THE magnetic field penetration depth λ is a basic parameter of superconductivity, related to ns/m* (superconducting carrier density/effective mass) as λ-2 ∝ ns/m* in the limit where the coherence length ζ is much...

    Y. J. Uemura, A. Keren, L. P. Le, G. M. Luke, W. D. Wu, Y. Kubo, T. Manako… in Nature (1993)

  18. No Access

    Article

    μ+SR study of two-dimensional antiferromagnets, delafossite-type compounds

    μ+SR experiments were performed on delafossite-type compounds, CuCrO2, AgCrO2, CuFeO2, which are model compounds of triangular lattice antiferromagnets. The initial asymmetries are much smaller than the expected ...

    M. Mekata, N. Yaguchi, H. Kuriyama, T. Asano, K. Nagamine… in Hyperfine Interactions (1993)

  19. No Access

    Article

    Magnetic-field penetration depth in K3C60 measured by muon spin relaxation

    THE discovery1–3 of superconductivity in C60 doped with the alkali metals potassium and rubidium has introduced a new family of three-dimensional molecular superconductors4. The potassium-doped compound3 K3C60 ha...

    Y. J. Uemura, A. Keren, L. P. Le, G. M. Luke, B. J. Sternlieb, W. D. Wu… in Nature (1991)

  20. No Access

    Article

    Eigenvector matrices of symmetric tridiagonals

    A simple test is given for determining whether a given matrix is the eigenvector matrix of an (unknown) unreduced symmetric tridiagonal matrix. A list of known necessary conditions is also provided. A lower bo...

    B. N. Parlett, W. -D. Wu in Numerische Mathematik (1984)