Magnetism and its coexistence with superconductivity in CaK(Fe0.949Ni0.051)4As4: Muon spin rotation/relaxation studies
Rustem Khasanov, Gediminas Simutis, Yurii G. Pashkevich, Tatyana Shevtsova, William R. Meier, Mingyu Xu, Sergey L. Bud'ko, Vladimir G. Kogan, Paul C. Canfield
DOI 10.1103/PhysRevB.102.094504 · Physical Review B
Active bibliographic source — not scientific approval
Bibliographic access preserves source history; it does not approve extracted materials or validate reported claims. Review warnings on each occurrence separately.
Abstract
The magnetic response of CaK(Fe0.949Ni0.051)4As4 was investigated by means of the muon spin rotation/relaxation. The long-range commensurate magnetic order sets in below the Néel temperature TN=50.0(5) K. The density-functional theory calculations have identified three possible muon stopping sites. The experimental data were found to be consistent with only one type of magnetic structure, namely, the long-range magnetic spin-vortex-crystal order with the hedgehog motif within the ab plane and the antiferromagnetic stacking along the c direction. The value of the ordered magnetic moment at T≈3 K was estimated to be mFe=0.38(11)μB (μB is the Bohr magneton). A microscopic coexistence of magnetic and superconducting phases accompanied by a reduction of the magnetic order parameter below the superconducting transition temperature Tc≃9 K is observed. Comparison with 11, 122, and 1144 families of Fe-based pnictides points to existence of correlation between the reduction of the magnetic order parameter at T→0 and the ratio of the transition temperatures Tc/TN. Such correlations were found to be described by Machida's model for coexistence of itinerant spin-density-wave magnetism and superconductivity [K. Machida, J. Phys. Soc. Jpn. 50, 2195 (1981); S. L. Bud'ko et al., Phys. Rev. B 98, 144520 (2018)].
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| CaK(Fe0.949Ni0.051)4As4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 9 | Pressure not reported | unknown |
| CaK(Fe0.949Ni0.051)4As4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 9 | Pressure not reported | unknown |
| CaK(Fe0.949Ni0.051)4As4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 9 | Pressure not reported | unknown |
| CaK(Fe0.949Ni0.051)4As4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 9 | Pressure not reported | unknown |
| CaKFe4As4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 36 | Pressure not reported | unknown |
Similar papers
Magnetism and its coexistence with superconductivity in CaK(FeNi)As: muon spin rotation/relaxation studies
similarity 0.99Rustem Khasanov et al. · 2020 · arXiv:2006.11320
Source status unknown — claims are unverified
Pressure-induced dependence of transport properties and lattice stability of CaK(Fe1–xNix)4As4 (x=0.04 and 0) superconductors with and without a spin-vortex crystal state
similarity 0.95Pengyu Wang et al.
Source status unknown — claims are unverified
Anisotropic superconductivity in the spin-vortex antiferromagnetic superconductor CaK(Fe0.95Ni0.05)4As4
similarity 0.94José Benito Llorens et al.
Source status unknown — claims are unverified
Coexistence of superconductivity and magnetism in CaK(Fe1−xNix)4As4 as probed by 57Fe Mössbauer spectroscopy
similarity 0.94Sergey L. Bud'ko et al.
Source status unknown — claims are unverified
Superconductivity and magnetic and transport properties of single-crystalline CaK(Fe1−xCrx)4As4
similarity 0.94M. Xu et al.
Source status unknown — claims are unverified
Superconductivity and phase diagrams of CaK(Fe1−xMnx)4As4 single crystals
similarity 0.93M. Xu et al.
Source status unknown — claims are unverified