Possible spin-fluctuation mediated superconductivity in UPd(2)Al(3)
UPd(2)Al(3) is an itinerant antiferromagnet (T(N) = 14.3 K) coexisting with the superconducting state (T(c) ~ 2 K). Neutron inelastic scattering experiments have been performed at T = 10 and 20 K. The spectra have been found to be described in energy by a single Lorentzian function and analysed on the basis of the so called self-consistent renormalization (SCR) theory. The characteristic energy scale was determined which represents the energy spread of the spin fluctuations. Direct experimental evidence has been obtained that the same proportionality relation between the frequency spread of the spin fluctuation, T(o), and T(c) holds in UPd(2)Al(3) as observed in high T(o) cuprates, strongly suggesting that the superconductivity in UPd(2)Al(3) is mediated by the spin fluctuations.
Bibliographic Reference: Article: Journal of the Physical Society of Japan, Vol. 66 91997) No. 10, pp 2981-2984
Record Number: 199810317 / Last updated on: 1998-03-09
Original language: en
Available languages: en