Community Research and Development Information Service - CORDIS

Abstract

Uranium based heavy fermion superconductors have attracted interest because of the opportunity to study the interplay between magnetism and superconductivity. All of these materials have been found to order anti-ferromagnetically with T(n)>T(e) with the exception of Ube(13) in which no neutron evidence for static magnetism has been reported. In experiments on single crystals at Riso national Laboratory, we have observed anti-ferromagnetic short range magnetic correlation situated at q=<0.5,0.5, 0>. Their breadth in q-space shows that the correlation's are short range; while the absence of a signal in certain directions suggests that the components we observe are longitudinally polarized with respect to their propagation vector. In energy space the correlation's extend to 2~meV and no signal is observable for T>30K. The remaining question concerns the energy dependence of this response around T(e).

Additional information

Authors: ITU KARLSRUHE, ;KARLSRUHE (DE),
Bibliographic Reference: Paper presented: European Conference on Neutron Scattering ECNS, Budapest (HU), 1-4th September (1999)
Availability: Available from Public Relations and Publications Unit, Ispra (IT)
Record Number: 199911586 / Last updated on: 1999-11-13
Category: PUBLICATION
Original language: en
Available languages: en
Follow us on: RSS Facebook Twitter YouTube Managed by the EU Publications Office Top