Properties of the superconducting state in compressed Sulphur

Abstract

The thermodynamic properties of the superconducting state in Sulphur under the pressure at 160 GPa were determined. It has been shown that: (i) the critical value of the Coulomb pseudopotential is equal to 0.127; (ii) the critical temperature (T_{C} =17 K) should be calculated by using the modified Allen-Dynes formula; (iii) the effective electron-electron interaction is attractive in the range of frequencies from zero to the frequency slightly lesser than the maximum phonon frequency (~ 0.85Ω_{max}); (iv) the dimensionless ratios 2Δ(0)/k_{B}T_{C}, $ΔC(T_{C})/C^{N}(T_{C}) and T_{C}C^{N}(T_{C})/H^{2}_{C}(0) are equal to 3.7, 1.65 and 0.16 respectively; (v) the ratio of the effective to bare electron mass reaches maximum of 1.77 for T=T_{C}.

3 pages, 5 figures

References in corpus (3)

• Specific heat and thermodynamic critical field for the molecular metallic hydrogen
• Properties of the superconducting state in molecular metallic hydrogen under pressure at 347 GPa
• Superconductivity of calcium under the pressure at 120 GPa

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