Evidence for weak itinerant long-range magnetic correlations in UGe2
A. Yaouanc, P. Dalmas de Reotier, P. C. M. Gubbens, C. T. Kaiser, A. A. Menovsky, M. Mihalik, S. P. Cottrell
Abstract
Positive muon spin relaxation measurements performed on the ferromagnet UGe2 reveal, in addition to the well known localized 5f-electron density responsible for the bulk magnetic properties, the existence of itinerant quasi-static magnetic correlations. Their critical dynamics is well described by the conventional dipolar Heisenberg model. These correlations involve small magnetic moments.
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