Evidence for a two component magnetic response in UPt3
The magnetic response of the heavy fermion superconductor UPt3 has been investigated on a microscopic scale by muon Knight shift studies. Two distinct and isotropic Knight shifts have been found for the field in the basal plane. While the volume fractions associated with the two Knight shifts are approximately equal at low and high temperatures, they show a dramatic and opposite temperature dependence around T(N). Our results are independent on the precise muon localization site. We conclude that UPt3 is characterized by a two component magnetic response.
Yaouanc
A
Commissariat a l'Energie Atomique, Departement de Recherche Fondamentale sur la Matiere Condensee, F-38054 Grenoble Cedex 9, France.
Dalmas De Reotier P
Gygax
FN
Schenck
A
Amato
A
Baines
C
Gubbens
PC
Kaiser
CT
de Visser A
Keizer
RJ
Huxley
A
Menovsky
AA