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

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

2007-09-19

arxiv.org/abs/0709.3009v1

Phys. Rev. B 77, 144404 (2008)

Physics

Condensed Matter

Materials Science

8 pages, 7 figures, submitted to Phys Rev B

Scientific paper

10.1103/PhysRevB.77.144404

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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