Structural properties and superconductivity of SrFe2As2-xPx and CaFe2As2-yPy
H. L. Shi, H. X. Yang, H. F. Tian, J. B. Lu, Z. W. Wang, Y. B. Qin, Y., J. Song, and J. Q. Li*
TL;DR
This study investigates how phosphorus substitution affects the structural properties and induces superconductivity in SrFe2As2-xPx and CaFe2As2-yPy, revealing suppressed magnetic order and enhanced superconducting transition temperatures.
Contribution
It provides new insights into phosphorus doping effects on structure and superconductivity in iron arsenide compounds, with specific transition temperatures identified.
Findings
Lattice parameters contract with P substitution.
SDW instability is suppressed by P doping.
Superconductivity observed at 27 K in SrFe2As1.3P0.7 and 13 K in CaFe2As1.7P0.3.
Abstract
The SrFe2As2-xPx and CaFe2As2-yPy materials were prepared by a solid state reaction method. X-ray diffraction measurements indicate the single-phase samples can be successfully obtained for SrFe2As2-xPx and CaFe2As2-yPy samples. Clear contraction of the lattice parameters are clearly determined due to the relatively smaller P ions substation for As. The SDW instability associated with tetragonal to orthorhombic phase transition is suppressed visibly in both systems following with the increase of P contents. The highest superconducting transitions are respectively observed at about 27 K in SrFe2As1.3P0.7 and at about 13 K in CaFe2As1.7P0.3.
Peer Reviews
No public reviews on file for this paper yet. If you reviewed it on a platform where reviews are public (OpenReview, ICLR, NeurIPS, ICML), you can paste yours below so the community can read it here.
Videos
No videos yet. Explain this paper in a talk, walkthrough, or lecture? Add one.