Jump in specific heat in the presence of a spin-density wave at the superconducting transition in iron pnictides
M. G. Vavilov, A. V. Chubukov, A. B. Vorontsov
DOI 10.1103/PhysRevB.84.140502 · 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
Many experiments reveal that in iron-based superconductors the jump of the specific heat ΔC at the superconducting Tc is not proportional to Tc, as expected in BCS theory. Rather, ΔC/Tc varies with Tc, and has a peak near optimal doping and decreases at smaller and larger dopings. We show that this behavior can be naturally explained by the interplay between superconductivity and antiferromagnetism. We demonstrate on general grounds that ΔC/Tc peaks at the doping where the coexistence phase with antiferromagnetism develops, and decreases at deviations from this doping in both directions. Our results are in quantitative agreement with the experiments.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Ba(Fe1-xNix)2As2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| Ba1-xKxFe2As2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| Ba(Fe1-xCox)2As2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| Ba(Fe0.925Co0.075)2As2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
Similar papers
Effect of spin-density wave fluctuations on the specific heat jump in iron pnictides at the superconducting transition
similarity 0.97D. Kuzmanovski et al.
Source status unknown — claims are unverified
Jump in specific heat at the superconducting transition temperature in Ba(Fe1−xCox)2As2 and Ba(Fe1−xNix)2As2 single crystals
similarity 0.96Sergey L. Bud’ko et al.
Source status unknown — claims are unverified
Nodeless superconductivity in the presence of spin-density wave in pnictide superconductors: The case of BaFe2−xNixAs2
similarity 0.96Mahmoud Abdel-Hafiez et al.
Source status unknown — claims are unverified
Electronic specific heat of two-band layered superconductors: Analysis within the generalized two-band α model
similarity 0.96E. G. Maksimov et al.
Source status unknown — claims are unverified
Selective Mott Physics as a Key to Iron Superconductors
similarity 0.96Luca de’ Medici et al.
Source status unknown — claims are unverified
Doping-dependent specific heat study of the superconducting gap in Ba(Fe1−xCox)2As2
similarity 0.95K. Gofryk et al.
Source status unknown — claims are unverified