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  • 1985-1989  (2)
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  • 1
    Electronic Resource
    Electronic Resource
    Magnetic order and superconductivity in heavy fermion systems (invited) (abstract) (1988)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 63 (1988), S. 3902-3902 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The neutron scattering technique, which directly probes magnetic correlation functions, has been used to identify the magnetic order in several heavy fermion systems, notably U2Zn171 and U1−xThxPt3.2 Our measurments3 show that pure UPt3, which is superconducting, is also a weak antiferromagnet with an ordered moment of 0.02 μB and a Néel temperature of roughly 5 K. We also find that the onset of superconductivity affects the magnetic correlations in UPt3. The relation between magnetism and superconductivity in compounds containing copper oxides is compared to that in the heavy fermion systems.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.340598
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Muon spin relaxation in CeCu2Si2 and muon knight shift in various heavy-fermion systems (1986)
    Springer
    Hyperfine interactions 31 (1986), S. 413-418 
    Details
    ISSN: 1572-9540
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Positive muon spin precession has been observed in various heavy-fermion systems in the transverse external magnetic field. In the superconductor CeCu2.1Si2, the relaxation rate of muon spins increases rapidly with decreasing temperature below TC. This is interpreted as the results of the inhomogeneous fields due to the imperfect penetration of the external field into the type-II superconducting state. The magnetic-field penetration depth λ is derived from the observed muon spin relaxation rate. λ is about 1200 ∢ at T∼0.5TC, and the temperature dependence of λ is consistent with the relation expected for a BCS superconductor. We have also measured the muon Knight shift Kμ in the normal (or paramagnetic) state of various heavy-fermion systems. Kμ is large and negative (about −1000∼−3000 ppm at T=10 K) for CeCu2Si2, UPt3 and CeAl3, while more complicated signals are measured in CePb3 and CeB6. The negative muon Knight shift in the non-magnetic heavy-fermion systems is discussed in terms of the Kondo-coupling between the conduction- and f-electrons.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02401589
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    Paper (German National Licenses)
    Fulltext
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