Properties of the superconducting state in compressed Sulphur

Details Properties of the superconducting state in compressed Sulphur Properties of the superconducting state in compressed Sulphur

2011-05-25

arxiv.org/abs/1105.4947v2

Physics

Condensed Matter

Superconductivity

3 pages, 5 figures

Scientific paper

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 (~ 0.85\Omega_{max}); (iv) the dimensionless ratios 2\Delta (0)/k_{B}T_{C}, $\Delta C(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}.

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