Upper critical fields and two-band superconductivity in Sr1−xEux(Fe0.89Co0.11)2As2 (x=0.20 and 0.46)
Rongwei Hu, Eun Deok Mun, M. M. Altarawneh, C. H. Mielke, V. S. Zapf, S. L. Bud'ko, P. C. Canfield
DOI 10.1103/PhysRevB.85.064511 · 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 upper critical fields Hc2(T) of single crystals of Sr1−xEux(Fe0.89Co0.11)2As2 (x=0.20 and 0.46) were determined by radio-frequency penetration depth measurements in pulsed magnetic fields. Hc2(T) approaches the Pauli limiting field but shows an upward curvature with an enhancement from the orbital limited field, as inferred from the Werthamer-Helfand-Hohenberg theory. We discuss the temperature dependence of the upper critical fields and the decreasing anisotropy using a two-band BCS model.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Sr0.797Eu0.203(Fe0.888Co0.112)2As2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 18 | Pressure not reported | onset |
| Sr0.797Eu0.203(Fe0.888Co0.112)2As2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 18.3 | Pressure not reported | zero_resistance |
| Sr0.537Eu0.463(Fe0.885Co0.115)2As2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 16.2 | Pressure not reported | onset |
| Sr0.537Eu0.463(Fe0.885Co0.115)2As2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 16.8 | Pressure not reported | zero_resistance |
Similar papers
Upper critical fields and two-band superconductivity in Sr1-xEux(Fe0.89Co0.11)2As2 (x=0.203 and 0.463)
similarity 0.93Rongwei Hu et al. · 2011 · arXiv:1111.7047
Source status unknown — claims are unverified
NMR evidence for an intimate relationship between antiferromagnetic spin fluctuations and extended s-wave superconductivity in monocrystalline SrFe2(As1−xPx)2
similarity 0.93M. Miyamoto et al.
Source status unknown — claims are unverified
Superconductivity and structural variation of the electron-correlated layer systems Sr(Pd1−xTx)2Ge2 (T = Co, Ni, Rh; 0⩽x⩽1)
similarity 0.93J. W. Wang et al.
Source status unknown — claims are unverified
Magnetic ground state of superconducting Eu(Fe0.88Ir0.12)2As2: A combined neutron diffraction and first-principles calculation study
similarity 0.92W. T. Jin et al.
Source status unknown — claims are unverified
Nodal superconductivity in isovalently substituted SrFe2(As1−xPx)2 pnictide superconductor at the optimal doping x=0.35
similarity 0.92J. Murphy et al.
Source status unknown — claims are unverified
Electron doping dependence of the anisotropic superconductivity in BaFe2−xNixAs2
similarity 0.92Zhaosheng Wang et al.
Source status unknown — claims are unverified