Quadrupolar interactions in Pr compounds: PrFe4P12 and PrBa2Cu3O6

Details Quadrupolar interactions in Pr compounds: PrFe4P12 and PrBa2Cu3O6 Quadrupolar interactions in Pr compounds: PrFe4P12 and PrBa2Cu3O6

2002-12-14

arxiv.org/abs/cond-mat/0212345v2

Journal of Physics: Condensed Matter 15, S2109 (2003)

Physics

Condensed Matter

Strongly Correlated Electrons

One of the figures, and a few sentences replaced. 8 pages, 5 figures, iopart submitted to the Proceedings of the conference on

Scientific paper

10.1088/0953-8984/15/28/332

We examine trivalent Pr crystal field models with near-degeneracy of the two lowest crystal field levels, where interaction-induced quadrupolar and dipolar moments are as important as the permanent moments of the crystal field ground state. We find that the Gamma1-Gamma4 level scheme yields a successful description of the antiferroquadrupolar ordering of PrFe4P12. For PrBa2Cu3O6, we argue that quadrupolar interaction is important for understanding the Pr ordering transition at 11K.

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