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Journal Article

Coexistence of Local Moment Magnetism and Heavy-Fermion Superconductivity in UPd2Al3

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Feyerherm, R., Amato, A., Gygax, F. N., Schenck, A., Geibel, C., Steglich, F., et al. (1994). Coexistence of Local Moment Magnetism and Heavy-Fermion Superconductivity in UPd2Al3. Physical Review Letters, 73(13), 1849-1852. doi:10.1103/PhysRevLett.73.1849.

Cite as: https://hdl.handle.net/11858/00-001M-0000-0019-DDE4-A
We report muon spin rotation measurements on the antiferromagnetic heavy-fermion superconductor UPd2Al3 in the superconducting state. The London penetration depth is found to be approximately isotropic, lambda(perpendicular to)(0) = 4800 +/- 500 Angstrom and lambda(parallel to)(0) = 4500 +/- 500 Angstrom. The mu(+) Knight shift behavior below T-c indicates that local moment magnetism and superconductivity are carried by different electron substrates of 5f character, one of which involves the heavy quasiparticles. For the latter a nearly isotropic magnetic susceptibility (chi) = 1.7 x 10(-3) emu/mole can be estimated.