^{63,65}Cu NMR and NQR evidence for an unusual spin dynamics in PrCu_2 below 100 K

A. Sacchetti; B. Delley; B. Pedrini; H. R. Ott; J. L. Gavilano; K. Magishi; M. Weller; R. Monnier; R. Mudliar; Y. \=Onuki

arxiv: 0709.3009 · v1 · submitted 2007-09-19 · ❄️ cond-mat.mtrl-sci

^(63,65)Cu NMR and NQR evidence for an unusual spin dynamics in PrCu₂ below 100 K

A. Sacchetti , M. Weller , J. L. Gavilano , R. Mudliar , B. Pedrini , K. Magishi , H. R. Ott , R. Monnier

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B. Delley Y. \=Onuki

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classification ❄️ cond-mat.mtrl-sci

keywords differentmagneticprcuunusualapparentbelowclaimedcommon

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We report the results of a $^{63,65}$Cu NMR/NQR study probing the intermetallic compound PrCu$_2$. The previously claimed onset of magnetic order at 65 K, indicated in a $\mu$SR 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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^(63,65)Cu NMR and NQR evidence for an unusual spin dynamics in PrCu₂ below 100 K

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