Search Results - (Author, Cooperation:W. Higemoto)

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  1. 1
    S. Nakatsuji ; K. Kuga ; K. Kimura ; R. Satake ; N. Katayama ; E. Nishibori ; H. Sawa ; R. Ishii ; M. Hagiwara ; F. Bridges ; T. U. Ito ; W. Higemoto ; Y. Karaki ; M. Halim ; A. A. Nugroho ; J. A. Rodriguez-Rivera ; M. A. Green ; C. Broholm
    American Association for the Advancement of Science (AAAS)
    Published 2012
    Staff View
    Publication Date:
    2012-05-05
    Publisher:
    American Association for the Advancement of Science (AAAS)
    Print ISSN:
    0036-8075
    Electronic ISSN:
    1095-9203
    Topics:
    Biology
    Chemistry and Pharmacology
    Computer Science
    Medicine
    Natural Sciences in General
    Physics
    Published by:
    http://www.aaas.org/

    Latest Papers from Table of Contents or Articles in Press
  2. 2
    Staff View
    ISSN:
    0921-4526
    Source:
    Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics:
    Physics
    Type of Medium:
    Electronic Resource
    URL:
    http://linkinghub.elsevier.com/retrieve/pii/0921-4526(94)90608-4

    Articles: DFG German National Licenses
  3. 3
    Staff View
    ISSN:
    0921-4526
    Source:
    Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics:
    Physics
    Type of Medium:
    Electronic Resource
    URL:
    http://dx.doi.org/10.1016/0921-4526(94)90608-4

    Articles: DFG German National Licenses
  4. 4
    Staff View
    ISSN:
    0375-9474
    Source:
    Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics:
    Physics
    Type of Medium:
    Electronic Resource
    URL:
    http://linkinghub.elsevier.com/retrieve/pii/0375-9474(93)90429-2

    Articles: DFG German National Licenses
  5. 5
    Nishiyama, K. ; Ohira, S. ; Dawson, W.K. ; Higemoto, W.
    Springer
    Published 1997
    Staff View
    ISSN:
    1572-9540
    Source:
    Springer Online Journal Archives 1860-2000
    Topics:
    Physics
    Notes:
    Abstract Recent measurements on NiO and CoO show a complex temperature dependence. In this work, the local μ+ fields are examined over an extended temperature range. Only one precession frequency of 61.3 MHz was observed in the μ+ spin precession in zero field in NiO, similar to the case in MnO. The signal broadens at 200 K and is difficult to observe above 250 K. In contrast, in CoO, at least three lines are observed: two sharp lines at 54.2 MHz, and at 78 MHz, with an additional small peak at 162 MHz. Above 40 K, the 54.2 MHz signal (CoO) vanishes, but the 78 MHz signal survives to 110 K. However, at 270–280 K, a new signal at 13 MHz is also observed. Dipole field calculations of these 3d‐oxides (MnO, NiO and CoO) for various lattice sites (symmetric sites and O‐bonded positions) are examined and compared with the experimental results, with considerations toward the dynamics of the muons.
    Type of Medium:
    Electronic Resource
    URL:
    http://dx.doi.org/10.1023/A:1012681305657

    Articles: DFG German National Licenses
  6. 6
    Higemoto, W. ; Satoh, K. ; Nishida, N. ; Nishiyama, K. ; Nagamine, K.
    Springer
    Published 1997
    Staff View
    ISSN:
    1572-9540
    Source:
    Springer Online Journal Archives 1860-2000
    Topics:
    Physics
    Notes:
    Abstract Using a pulsed muon beam, we have investigated the microscopic μ+ behavior in solid H2 and D2 down to 0.6 K by the μ+SR method. From the studies of μ+ spin relaxation phenomena in solid para‐ H2 and ortho‐ D2, we have found that μ+ forms three distinct microscopic states; H2μ+( D2μ+)(20\sim25\%), muonium (15\sim20\%) and μ+(\sim60\%). In H2μ+, the μ+ spin is depolarized in solid para‐ H2 and a local magnetic field Bloc=1\sim2 G is deduced from LF‐μ+SR measurements. The magnitude of Bloc is inconsistent with the magnetic dipolar field (\sim25 G) expected from the magnetic moments of two protons in the H2μ+ molecule and suggests that the H2μ+ molecule might be in the rotationally excited state. From LF‐μ+SR measurements, muonium and μ+ have been found to diffuse in solid o‐ D_2. The diffusion rate of muonium is two order of magnitude larger than that of μ+.
    Type of Medium:
    Electronic Resource
    URL:
    http://dx.doi.org/10.1023/A:1012604900148

    Articles: DFG German National Licenses
  7. 7
    Staff View
    ISSN:
    1572-9540
    Source:
    Springer Online Journal Archives 1860-2000
    Topics:
    Physics
    Notes:
    Abstract The phenomenon of delayed annihilation of antiprotons in helium is the first instance of a naturally occurring trap for antimatter in ordinary matter. Recent studies of this effect at CERN are summarised, and plans are described for laser excitation experiments to test its interpretation in terms of metastable exotic helium atom formation.
    Type of Medium:
    Electronic Resource
    URL:
    http://dx.doi.org/10.1007/BF00567268

    Articles: DFG German National Licenses
  8. 8
    Higemoto, W. ; Nagamine, K. ; Kuroda, S. ; Takita, K.
    Springer
    Published 1999
    Staff View
    ISSN:
    1572-9540
    Source:
    Springer Online Journal Archives 1860-2000
    Topics:
    Physics
    Notes:
    Abstract The microscopic state of the positive muon in the transition metal dichalcogenide 2H-NbSe2 was studied using the muon spin relaxation method (μ+SR). We found that the μ+SR spectra consist of two components. The ratio of the two components and the dynamics of the muon change at 140 K, at the charge-density-wave transition temperature (32 K), and again at the superconducting transition temperature (7 K). We discuss the relation between conduction electron properties and the muon's behavior.
    Type of Medium:
    Electronic Resource
    URL:
    http://dx.doi.org/10.1023/A:1017003102410

    Articles: DFG German National Licenses