Order-disorder-order phase transitions in the pyrochlore superconductor Cd2Re2O7
Artikel i vetenskaplig tidskrift, 2005

The structural phase transitions of the pyrochlore superconductor Cd2Re2O7 are investigated by Raman light scattering. The cubic to tetragonal transition at 200 K is characterized by the appearance of a broad mode originating from oxygen ion motion in agreement with recent theoretical predictions [I. A. Sergienko , Phys. Rev. Lett. 92, 065501 (2004)]. The appearance of well-defined low-frequency modes at the 120-K transition indicates that it is driven by ordering of the Cd ions within the channel voids of the distorted pyrochlore.

Författare

Christopher Knee

Chalmers, Teknisk fysik

Joakim Holmlund

Chalmers, Teknisk fysik, Kondenserade materiens fysik

Jakob Andreasson

Chalmers, Teknisk fysik, Kondenserade materiens fysik

Mikael Käll

Chalmers, Teknisk fysik, Kondenserade materiens fysik

Sten Eriksson

Chalmers, Kemi- och bioteknik, Oorganisk miljökemi

Lars Börjesson

Chalmers, Teknisk fysik, Kondenserade materiens fysik

Physical Review B - Condensed Matter and Materials Physics

1098-0121 (ISSN)

Vol. 71

Ämneskategorier

Miljövetenskap

DOI

10.1103/PhysRevB.71.214518

Mer information

Skapat

2017-10-08