Direct observation of magnetic fluctuations in UPt3 both above and below the superconducting transition temperature
Tóm tắt
Polarised neutrons and polarisation analysis were used in a neutron scattering study of UPt3 both above the superconducting transition temperatureT
c as well as below. Thus the existence of magnetic fluctuations in UPt3 was established unambiguously. For varyingQ vectors the magnetic scattering intensity was integrated over energy transfers ±20 meV to obtain a measure of the corresponding magnetic correlation function. No indication for strong spatial correlations of magnetisation could be detected. Furthermore inelastic transitions up to energy transfers of 80 meV were observed.
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