Magnetic order and fluctuations in superconducting UPt3
G. Aeppli, E. Bucher, C. Broholm, J. K. Kjems, J. Baumann, J. Hufnagl
DOI 10.1103/PhysRevLett.60.615 · Physical Review Letters
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Abstract
Neutron diffraction shows that superconducting UPt3 can be an antiferromagnet with an ordered moment of (0.02±0.01)μB and a Néel temperature (TN) of 5 K. The squared order parameter is linear function of temperature from TN to the superconducting transition temperature, Tc=0.5 K, below which it ceases to evolve. Inelastic neutron scattering demonstrates that the fluctuating moments are strongly correlated; the characteristic energy for fluctuations with wave vectors close to the ordering wave vector is 0.2 meV≊4kTc..AE
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| UPt3 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 0.5 | Pressure not reported | onset |
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