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Journal Article

Magnetic and Superconducting Properties of the Heavy-Fermion Superconductor UPd2Al3

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Amato, A., Feyerherm, R., Gygax, F. N., Schenck, A., Weber, M., Caspary, R., et al. (1992). Magnetic and Superconducting Properties of the Heavy-Fermion Superconductor UPd2Al3. EPL, 19(2), 127-133. doi:10.1209/0295-5075/19/2/012.

Cite as: https://hdl.handle.net/11858/00-001M-0000-0019-D781-B
Zero- and transverse-field muon-spin rotation (mu+ SR) spectroscopy, as well as critical-field investigations were performed on the newly discovered antiferromagnetic superconductor UPd2Al3. In contrast to the situation in UNi2Al3, no spontaneous frequency could be observed in the zero-field spectroscopy, suggesting a symmetric muon stopping site. The coexistence between magnetism and superconductivity could unambiguously be confirmed by the mu+ SR data. The magnetic-penetration depth lambda(0) has been obtained from the increase of the mu+ SR line width below T(c) and from the slopes of the critical field at T(c). The results are compatible with a value of lambda(0) = (6250 +/- 1250) A and suggest that UPd2Al3 is a BCS-type weak-coupling superconductor.