2001/09/04 by M. Hanawa, M Hanawa, J Yamaura +7 · 2 citations
Materials Science · Physics and Astronomy · #Advanced Condensed Matter Physics #Nuclear materials and radiation effects #Topological Materials and Phenomena #cond-mat.supr-con
paper · pdf · doi:10.1016/s0022-3697(02)00090-2
4 pages, 4figures, proceeding for ISSP8
arxiv created 2001/09/04 · openalex publication_date 2002/06/01 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
We report a structural phase transition found at Ts = 200 K in a pyrochlore oxide Cd2Re2O7 which shows superconductivity at Tc = 1.0 K. X-ray diffractionexperiments indicate that the phase transition is of the second order, from a high-temperature phase with the ideal cubic pyrochlore structure (space group Fd-3m) to a low-temperature phase with another cubic structure (space group F-43m). It is accompanied by a dramatic change in the resistivity and magnetic susceptibility and thus must induce a significant change in the electronic structure of Cd2Re2O7.