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It was discovered that there are two contributions to the dynamic response in UPd(2)Al(3). The first one is a heavily damped spin-wave, which has been observed previously. It shows no appreciable change on warming through T(c), but softens and becomes overdamped as T approaches T(N). The second one is a quasielastic-like component that exists in the antiferromagnetically ordered state and is strongly localized around the ordered wavevector. As a function of temperature this component exhibits a minimum at the superconducting transition temperature T(c) and increases strongly below T(c). Its width in the momentum space at T = 0.5 K corresponds to the correlation length of approximately 50 angstroms, which is close to the superconducting coherence length of approximately 85 angstroms.

Additional information

Authors: SATO N ET AL, Tohoku University, Physics Department, Sendai (JP);LANDER G H, JRC Karlsruhe (DE);ROESSLI B, Institut Max von Laue-Paul Langevin, Grenoble (FR);KOMATSUBARA T, Tohoku University, Center for Low Temperature Science, Sendai (JP)
Bibliographic Reference: Article: Journal of the Physical Society of Japan
Record Number: 199710796 / Last updated on: 1997-07-02
Original language: en
Available languages: en
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