Physics – Condensed Matter – Superconductivity
Scientific paper
2010-05-18
New Journal of Physics 13 (2011) 033020
Physics
Condensed Matter
Superconductivity
15 pages, 6 figures
Scientific paper
In this paper we report the synthesis of iron-based superconductors CaFe2-xRhxAs2 using one-step solid state reaction method, which crystallizes in the ThCr2Si2-type structure with a space group I4/mmm. The systematic evolution of the lattice constants demonstrates that the Fe ions are successfully replaced by the Rh. By increasing the doping content of Rh, the spin-density-wave (SDW) transition in the parent compound is suppressed and superconductivity emerges. The maximum superconducting transition temperature is found at 18.5 K with the doping level of x = 0.15. The temperature dependence of DC magnetization confirms superconducting transitions at around 15 K. The general phase diagram was obtained and found to be similar to the case of Rh-doping Sr122 system. Our results explicitly demonstrate the feasibility of inducing superconductivity in Ca122 compounds by higher d-orbital electrons doping, however, different Rh-doping effect between FeAs122 compounds and FeAs1111 systems still remains an open question.
Gao Zhaoshun
Ma* Yanwei
Qi Yanpeng
Wang Chun-lei
Wang Dongliang
No associations
LandOfFree
Superconductivity induced by doping Rh in CaFe2-xRhxAs2 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 Superconductivity induced by doping Rh in CaFe2-xRhxAs2, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Superconductivity induced by doping Rh in CaFe2-xRhxAs2 will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-58013