63,65Cu NMR and NQR evidence for an unusual spin dynamics in PrCu2 below 100 K
Abstract
We report the results of a 63,65Cu NMR/NQR study probing the intermetallic compound PrCu2. The previously claimed onset of magnetic order at 65 K, indicated in a μSR study, is not confirmed. Based on our data we discuss different possible reasons for this apparent discrepancy, including a non negligible influence of the implanted muons on their environment. Competing dipolar and quadrupolar interactions lead to unusual features of the magnetic-ion/conduction-electron system, different from those of common intermetallics exhibiting structural or magnetic instabilities.
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