Ordered magnetic and quadrupolar states under hydrostatic pressure in orthorhombic PrCu2

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

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Strongly Correlated Electrons

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http://salesiana.dossiersoluciones.com/handle/123456789/24462

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/cond-mat/0407546
 http://arxiv.org/abs/cond-mat/0407546
 Phys. Rev. B, 71, 024408 (2005)
 doi:10.1103/PhysRevB.71.024408

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arXiv