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In this paper neutron critical scattering experiments have been performed on the heavy-fermion superconductor UPd(2)Al(3) above the Néel temperature in order to characterize the short-ranged correlations associated with the magnetic ordering. The magnetic correlation length along the hexagonal c axis is longer than that in the basal plane, suggesting that the aniferromagnetic interaction along the c axis is stronger than the ferromagnetic one in the basal plane. This antiferromagnetic correlation is discussed in connection with the pairing mechanism of the superconductivity. The magnetic fluctuations have been shown to exhibit the two-length scales reminiscent of features observed in Tb and Ho.

Additional information

Authors: SATO N ET AL, Tohoka University, Physics Department, Graduate School of Science, Sendai (JP);SHAPIRO S M, Brookhaven National Laboratory, Upton, New York (US);LANDER G H, JRC Karlsruhe (DE);KAKURAI K, University of Tokyo, Neutron Scattering Laboratory, Institute for Solid State Physics, Tokai (JP)
Bibliographic Reference: Article: Physical Review B, Condensed Matter, Vol. 53 (1996) No. 21, pp. 14043-14046
Record Number: 199611071 / Last updated on: 1996-09-30
Original language: en
Available languages: en
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