The Properties of the Superconducting State in YNi2B2C: The One-Band Eliashberg Approach

Details The Properties of the Superconducting State in YNi2B2C: The One-Band Eliashberg Approach The Properties of the Superconducting State in YNi2B2C: The One-Band Eliashberg Approach

2011-05-27

arxiv.org/abs/1105.5524v1

Physics

Condensed Matter

Superconductivity

Scientific paper

The basic thermodynamic parameters of the superconducting state in $\rm{YNi_{2}B_{2}C}$ were calculated in the framework of the one-band Eliashberg model. The effective Eliashberg function, determined on the basis of the transport function (R.S. Gonnelli, {\it et al.}, Physica C \textbf{341}, 1957 (2000)), was used during calculations. It was shown that the dimensionless ratios are equal to: $R_{1}\equiv 2\Delta(0)/k_{B}T_{C}=3.87$, $R_{2}\equiv\Delta C(T_{C})/C^{N}(T_{C})=1.79$ and $R_{3}\equiv T_{C}C^{N}(T_{C})/H_{C}^{2}(0)=0.159$. The value $R_{1}$ fairly agrees with the experimental data whereas $R_{2}$ and $R_{3}$ agree very well.

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