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Journal Article

UPd2Al3 singlet‐ground‐state magnetism in a heavy‐fermion superconductor

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Grauel, A., Böhm, A., Geibel, C., Weber, G., Steglich, F., Sato, N., et al. (1993). UPd2Al3 singlet‐ground‐state magnetism in a heavy‐fermion superconductor. Journal of Applied Physics, 73(10), 5421-5423. doi:10.1063/1.353702.

Cite as: https://hdl.handle.net/11858/00-001M-0000-0019-DCEC-2
Analysis of the leading nonlinear term of the susceptibility chi3(T) of the singlet-ground-state heavy-fermion superconductor UPd2Al3 shows evidence for a jump at T(N) and a ''third-order'' Curie-Weiss type behavior at higher temperatures, inferring quadrupolar or magnetoelastic interactions. These effects are closely related to quadrupolar correlations observed in measurements of the nonlinear susceptibility and calculated in a crystal-electric-field approach for the singlet-ground-state systems URu2Si2 and PrNi5.