Physics – Condensed Matter – Superconductivity
Scientific paper
2008-06-16
Nature Materials 7, 953-959 (2008).
Physics
Condensed Matter
Superconductivity
19 pages, 5 figures
Scientific paper
10.1038/nmat2315
We use neutron scattering to study the structural and magnetic phase transitions in the iron pnictides CeFeAsO1-xFx as the system is tuned from a semimetal to a high-transition-temperature (high-Tc) superconductor through Fluorine (F) doping x. In the undoped state, CeFeAsO develops a structural lattice distortion followed by a stripe like commensurate antiferromagnetic order with decreasing temperature. With increasing Fluorine doping, the structural phase transition decreases gradually while the antiferromagnetic order is suppressed before the appearance of superconductivity, resulting an electronic phase diagram remarkably similar to that of the high-Tc copper oxides. Comparison of the structural evolution of CeFeAsO1-xFx with other Fe-based superconductors reveals that the effective electronic band width decreases systematically for materials with higher Tc. The results suggest that electron correlation effects are important for the mechanism of high-Tc superconductivity in these Fe pnictides.
Chen Guo-Feng
Chen Yafeng
Dai Pengcheng
Green Mark A.
Huang Qingzhen
No associations
LandOfFree
Structural and magnetic phase diagram of CeFeAsO1-xFx and its relationship to high-temperature superconductivity does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Structural and magnetic phase diagram of CeFeAsO1-xFx and its relationship to high-temperature superconductivity, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Structural and magnetic phase diagram of CeFeAsO1-xFx and its relationship to high-temperature superconductivity will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-91663