Transport and thermodynamic properties of (Ca1−xLax)10(Pt3As8)(Fe2As2)5 superconductors
N. Ni, W. E. Straszheim, D. J. Williams, M. A. Tanatar, R. Prozorov, E. D. Bauer, F. Ronning, J. D. Thompson, R. J. Cava
DOI 10.1103/PhysRevB.87.060507 · Physical Review B
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Abstract
Single crystals of (Ca1−xLax)10(Pt3As8)(Fe2As2)5 (x=0–0.182) superconductors have been grown and characterized by x-ray, microprobe, transport, and thermodynamic measurements. Features in the magnetic susceptibility, specific heat, and two kinks in the derivative of the electrical resistivity around 100 K in the x=0 compound support the existence of decoupled structural and magnetic phase transitions. With La doping, the structural/magnetic phase transitions are suppressed and a half dome of superconductivity with a maximal Tc around 26 K is observed in the temperature-concentration phase diagram.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| (Ca1-xLax)10(Pt3As8)(Fe2As2)5 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 26.1 | Pressure not reported | midpoint |
| (Ca1-xLax)10(Pt3As8)(Fe2As2)5 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 26.1 | Pressure not reported | unknown |
| LaFeAsO0.9F0.1 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 26 | Pressure not reported | unknown |
| Ca10(Pt3As8)(Fe2As2)5 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 30 | Pressure not reported | unknown |
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