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RESEARCH PRODUCT
Neutron diffraction study of the heavy fermion superconductors UM2Al3(M=Pd, Ni)
C. SchankFrank SteglichA. GrauelC. GeibelPeter M. FischerA. KrimmelH. MalettaAlois LoidlB. Roesslisubject
PhysicsSuperconductivityRange (particle radiation)Magnetic structureCondensed matter physicsMagnetic momentNeutron diffractionAntiferromagnetismGeneral Materials ScienceHeavy fermion superconductorNeutron scatteringCondensed Matter PhysicsElectronic Optical and Magnetic Materialsdescription
An elastic neutron scattering study was performed on the new superconducting heavy fermion systems UPd2Al3 and UNi2Al3. The neutron diffraction patterns reveal unambiguously long range antiferromagnetic order in UPd2Al3 with an ordered magnetic momentμ U = (0.85±0.03)μ B , which coexists with the superconducting state. This is by far the largestμ U value observed for any heavy fermion superconductor. For UNi2Al3, no long-range magnetic order could be observed for temperaturesT≧1.5 K, yielding an upper limit of the ordered moment of 0.2μ B .
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1992-06-01 | Zeitschrift f�r Physik B Condensed Matter |