Uniaxial stress variation of magnetic and superconducting properties of URu2Si2

We describe uniaxial stress experiments on URu2Si2 where the stress can be tuned in situ at temperatures down to 50 mK and in an applied field up to 6 T. The magnetic ordering temperature T-N and the superconducting temperatu re T-c for uniaxial stress applied along the c-axis are reported as well as the corresponding variation of the upper critical field. The uniaxial stre ss dependence of T-c is initially more substantial than that reported by ot her authors. Our results however extend to higher stresses at which the str ess dependence flattens. (C) 1999 Published by Elsevier Science B.V. All ri ghts reserved.