Magnetotransport properties of doped RuSr2GdCu2O8
Abstract
RuSr2GdCu2O8, in which magnetic order and superconductivity coexist with Tmag≫Tc, is a complex material which poses new and important questions to our understanding of the interplay between magnetic and superconducting order. Resistivity, Hall-effect, and thermopower measurements on sintered ceramic RuSr2GdCu2O8 are presented, together with results on a broad range of substituted analogs. The Hall effect and thermopower both show anomalous decreases below Tmag, which may be explained within a simple two-band model by a transition from localized to more itinerant behavior in the RuO2 layer at Tmag.
- Publication:
-
Physical Review B
- Pub Date:
- August 2003
- DOI:
- 10.1103/PhysRevB.68.064514
- arXiv:
- arXiv:cond-mat/0302499
- Bibcode:
- 2003PhRvB..68f4514M
- Keywords:
-
- 74.25.Fy;
- 74.25.Ha;
- 74.72.Jt;
- Transport properties;
- Magnetic properties;
- Other cuprates including Tl and Hg-based cuprates;
- Condensed Matter - Superconductivity
- E-Print:
- 10 pages, 7 figures, submitted to Phys. Rev. B., correspondence to J.Tallon@irl.cri.nz