Interplay of antiferromagnetism, ferromagnetism, and superconductivity in EuFe2(As1−xPx)2 single crystals
H. S. Jeevan, Deepa Kasinathan, Helge Rosner, Philipp Gegenwart
DOI 10.1103/PhysRevB.83.054511 · Physical Review B
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Abstract
We report a systematic study of the influence of antiferromagnetic and ferromagnetic phases of Eu2+ moments on the superconducting phase upon doping the As site by isovalent P, which essentially acts like chemical pressure on EuFe2As2. Bulk superconductivity with transition temperatures of 22 and 28 K are observed for x=0.16 and 0.20 samples, respectively. The Eu ions order antiferromagnetically for x ⩽0.13, while bulk superconductivity coexists with Eu-antiferromagnetism for 0.13 < x<0.22. In contrast, a crossover is observed for x⩾0.22 whereupon the Eu ions order ferromagnetically and superconductivity is fully suppressed. Density-functional-theory-based calculations reproduce the observed experimental findings consistently. We discuss in detail the coexistence of superconductivity and magnetism in a tiny region of the phase space and comment on the competition of ferromagnetism and superconductivity in the title compound.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| EuFe2(As1-xPx)2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 22 | Pressure not reported | onset |
| EuFe2(As1-xPx)2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 29 | Pressure not reported | onset |
| EuFe2(As1-xPx)2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 22 | Pressure not reported | onset |
| EuFe2(As1-xPx)2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 28 | Pressure not reported | onset |
| EuFe2(As1-xPx)2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 28 | Pressure not reported | onset |
| EuFe2(As1-xPx)2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 28 | Pressure not reported | unknown |
| EuFe2(As0.7P0.3)2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 26 | Pressure not reported | unknown |
| EuFe2(As0.73P0.27)2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 26 | Pressure not reported | unknown |
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