Magnetic and Superconducting Properties of the Heavy-Fermion Superconductor UPd 2 Al 3
- 15 May 1992
- journal article
- Published by IOP Publishing in Europhysics Letters
- Vol. 19 (2) , 127-133
- https://doi.org/10.1209/0295-5075/19/2/012
Abstract
Zero- and transverse-field muon-spin rotation (μ+ 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 μ+ SR data. The magnetic-penetration depth λ(0) has been obtained from the increase of the μ+ SR line width below Tc and from the slopes of the critical field at Tc. The results are compatible with a value of λ(0) = (6250 ± 1250) and suggest that UPd2Al3 is a BCS-type weak-coupling superconductor.Keywords
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