Magnetic properties of PrCu$_2$ at high pressure

A. Sacchetti; M. Weller; H. R. Ott; Y. Onuki

doi:10.1140/epjb/e2008-00428-x

Magnetic properties of PrCu$_2$ at high pressure

Strongly Correlated Electrons 2009-11-13 v1 Other Condensed Matter

Authors: A. Sacchetti , M. Weller , H. R. Ott , Y. Onuki

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Abstract

We report a study of the low-temperature high-pressure phase diagram of the intermetallic compound PrCu $_2$ , by means of molecular-field calculations and $^{63,65}$ Cu nuclear-quadrupole-resonance (NQR) measurements under pressure. The pressure-induced magnetically-ordered phase can be accounted for by considering the influence of the crystal electric field on the $4f$ electron orbitals of the Pr $^{3+}$ ions and by introducing a pressure-dependent exchange interaction between the corresponding local magnetic moments. Our experimental data suggest that the order in the induced antiferromagnetic phase is incommensurate. The role of magnetic fluctuations both at high and low pressures is also discussed.

Keywords

PrCu2 high pressure magnetic properties nuclear quadrupole resonance crystal electric field antiferromagnetic phase incommensurate order

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@article{arxiv.0808.2566,
  title  = {Magnetic properties of PrCu$_2$ at high pressure},
  author = {A. Sacchetti and M. Weller and H. R. Ott and Y. Onuki},
  journal= {arXiv preprint arXiv:0808.2566},
  year   = {2009}
}

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7 pages, 6 figures, submitted to Eur. Phys. J. B

Magnetic properties of PrCu$_2$ at high pressure

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