Enhancement of Magnetic Flutuations on Passing Below T(C) in the Heavy Fermion Superconductor Upd(2)Al(3)
The heavy fermion superconductor Upd(2)Al(3) exhibits the unusual combination of an antiferromagnetic phase transition, at T(N)=14.3 K, followed by a superconducting phase transition below 2 K without destruction of the ordered magnetic moment. Polarized inelastic neutron scattering reveals the presence of two coupled modes both transverse to the sub-lattice inelastic response. We show that it is reasonable to consider the superconducting state as arizing out of interactions between quasiparticles which are strongly renormalized by the low frequency exchange field.
Bibliographic Reference: Article: Physical Review Letters, 1998
Record Number: 199910236 / Last updated on: 1999-03-12
Original language: en
Available languages: en