Metal-Nonmetal Changeover in Pyrochlore Iridates

Details Metal-Nonmetal Changeover in Pyrochlore Iridates Metal-Nonmetal Changeover in Pyrochlore Iridates

2001-06-18

arxiv.org/abs/cond-mat/0106330v1

Physics

Condensed Matter

Strongly Correlated Electrons

4 pages, 5 figures, and submitted to J. Phys. Soc. Jpn

Scientific paper

10.1143/JPSJ.70.2880

We report the low temperature properties of a new series of pyrochlore iridates R2Ir2O7 (R = rare-earth elements). We found that the compounds with R = Pr, Sm, Nd, and Eu exhibit metallic conductivity, whereas those with smaller rare-earth ions are nonmetallic. Such metal-nonmetal changeover is attributable to the importance of electron correlation among the Ir 5d electrons. Reflecting the geometrical frustration in the pyrochlore lattice, the rare-earth moments do not exhibit magnetic ordering to temperatures well below the antiferromagnetic Weiss temperature. We have not found any sign of superconductivity down to 0.3 K in these compounds.

Affiliated with

Also associated with

No associations

Rating

Metal-Nonmetal Changeover in Pyrochlore Iridates 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 Metal-Nonmetal Changeover in Pyrochlore Iridates, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Metal-Nonmetal Changeover in Pyrochlore Iridates will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-239796