P-T phase diagram of iron arsenide superconductor NdFeAsO0.88F0.12

Details P-T phase diagram of iron arsenide superconductor NdFeAsO0.88F0.12 P-T phase diagram of iron arsenide superconductor NdFeAsO0.88F0.12

2011-10-21

arxiv.org/abs/1110.4909v1

Physics

Condensed Matter

Strongly Correlated Electrons

Scientific paper

NdFeAsO0.88F0.12 belongs to the recently discovered family of high-TC iron-based superconductors. The influence of high pressure on transport properties of this material has been studied. Contrary to La-based compounds, we did not observe a maximum in TC under pressure. Under compression, TC drops rapidly as a linear function of pressure with the slope k = -2.8 \pm 0.1 K / GPa. The extrapolated value of TC at zero pressure is about TC (0) = 51.7 \pm 0.4 K. At pressures higher than ~18.4 GPa, the superconducting state disappears at all measured temperatures. The resistance changes slope and shows a turn-up behavior, which may be related to the Kondo effect or a weak localization of two-dimensional carriers below ~45 K that is above TC and thus competing with the superconducting phase. The behavior of the sample is completely reversible at the decompression. On the bases of our experimental data, we propose a tentative P-T phase diagram of NdFeAsO0.88F0.12.

Affiliated with

Also associated with

No associations

Rating

P-T phase diagram of iron arsenide superconductor NdFeAsO0.88F0.12 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 P-T phase diagram of iron arsenide superconductor NdFeAsO0.88F0.12, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and P-T phase diagram of iron arsenide superconductor NdFeAsO0.88F0.12 will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-564010