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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
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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.

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T. Naka, L. A. Ponomarenko, A. de Visser, A. Matsushita, R. Settai, Y. Onuki. 2004-07-21. Ordered magnetic and quadrupolar states under hydrostatic pressure in orthorhombic PrCu2. https://doi.org/10.1103/physrevb.71.024408

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