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  • PACS. 75.30.Hx Magnetic impurity interactions - 75.40.Gb Dynamic properties (dynamic susceptibility, spin waves, spin diffusion, dynamic scaling, etc.) - 76.75.+i Muon spin rotation and relaxation  (1)
  • Superconducting materials (excluding high-T c cuprates)  (1)
  • 1
    Electronic Resource
    Electronic Resource
    An overview on recent NMR-NQR studies of high-T c superconductors and of their precursors AF (1994)
    Springer
    Il nuovo cimento della Società Italiana di Fisica 16 (1994), S. 1743-1753 
    Details
    ISSN: 0392-6737
    Keywords: Superconducting materials (excluding high-T c cuprates) ; Nuclear magnetic resonance and relaxation ; Conference proceedings
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Summary An overview on some works recently carried out by means of pulsed NMR-NQR experiments is given. The choice of the arguments is aimed at providing a flash on the topics and phenomena most tipically studied with the afore-mentioned approach: from the antiferromagnets (AF) precursors of high-temperature superconductors upon charge and spin doping (such as CuO-doped Li, La2CuO4-doped Sr and Zn) to the doping regime leading to superconductivity in LASCO and YBCO with the related issues involving the comparison with the Fermi-liquid behaviour, the possible opening of a pseudo-spin-gap aboveT c and the anisotropy and field effect ratios belowT c, the latter also in relation to thes-wave ord-wave orbital coupling. Finally, the topic of the motions of the flux lines in YBCO is addressed, in particular by discussing some experiments based on spin-echo dephasing due to thermal excitations and in the presence of d.c. currents and pulsed magnetic fields.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02462169
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  • 2
    Electronic Resource
    Electronic Resource
    SR evidence of low frequency spin fluctuations in the AF phase of hole-doped NiO (1999)
    Springer
    The European physical journal 7 (1999), S. 219-223 
    Details
    ISSN: 1434-6036
    Keywords: PACS. 75.30.Hx Magnetic impurity interactions - 75.40.Gb Dynamic properties (dynamic susceptibility, spin waves, spin diffusion, dynamic scaling, etc.) - 76.75.+i Muon spin rotation and relaxation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract: μSR measurements in the antiferromagnetic (AF) phase of Ni1-xLixO for are reported. While in pure NiO the muon longitudinal depolarization rate is found almost temperature independent, in the Li-doped compounds broad maxima around 130 K are observed. These maxima are associated with the progressive freezing of the spin fluctuations of S =1/2 defects induced by the localization of the extra-holes. From the temperature dependence of and the stretched exponential form of the depolarization, insights on the distribution of correlation times for the fluctuating field at the muon site are derived.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s100510050607
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
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