Fermi Surface Topology and the Superconducting Gap Function in UPd2Al3: A Neutron Spin-Echo Study
E. Blackburn, A. Hiess, N. Bernhoeft, M. C. Rheinstädter, W. Häußler, G. H. Lander
DOI 10.1103/PhysRevLett.97.057002 · Physical Review Letters
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Abstract
We report on a single crystal neutron spin-echo investigation of the low-energy dynamic response in the heavy-fermion superconductor UPd2Al3 in the vicinity of the antiferromagnetic wave vector Q0=(0 0 0.5). Well inside the superconducting phase, antiferromagnetic quasielastic scattering, which is present in the normal state, is absent for relaxation times up to 10 ns, equivalent to an energy resolution of ∼1 μeV. This places strong constraints on possible models for this magnetic superconductor.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| UPd2Al3 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 1.8 | Pressure unresolved | unknown |
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