Ordered magnetic and quadrupolar states under hydrostatic pressure in orthorhombic PrCu2

T. Naka; L. A. Ponomarenko; A. de Visser; A. Matsushita; R. Settai; Y. Onuki

doi:10.1103/PhysRevB.71.024408

Ordered magnetic and quadrupolar states under hydrostatic pressure in orthorhombic PrCu2

Strongly Correlated Electrons 2007-05-23 v1

Authors: T. Naka , L. A. Ponomarenko , A. de Visser , A. Matsushita , R. Settai , Y. Onuki

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Abstract

We report magnetic susceptibility and electrical resistivity measurements on single-crystalline PrCu2 under hydrostatic pressure, up to 2 GPa, which pressure range covers the pressure-induced Van Vleck paramagnet-to-antiferromagnet transition at 1.2 GPa. The measured anisotropy in the susceptibility shows that in the pressure-induced magnetic state the ordered 4f-moments lie in the ac-plane. We propose that remarkable pressure effects on the susceptibility and resistivity are due to changes in the quadrupolar state of O22 and/or O20 under pressure. We present a simple analysis in terms of the singlet-singlet model.

Keywords

hydrostatic pressure magnetic susceptibility electrical resistivity Van Vleck paramagnet quadrupolar state PrCu2

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@article{arxiv.cond-mat/0407546,
  title  = {Ordered magnetic and quadrupolar states under hydrostatic pressure in orthorhombic PrCu2},
  author = {T. Naka and L. A. Ponomarenko and A. de Visser and A. Matsushita and R. Settai and Y. Onuki},
  journal= {arXiv preprint arXiv:cond-mat/0407546},
  year   = {2007}
}

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14 pages, 9 figures submitted to Phys. Rev. B

Ordered magnetic and quadrupolar states under hydrostatic pressure in orthorhombic PrCu2

Abstract

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