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2009 | 116 | 6 | 1053-1058
Article title

Thermodynamic Properties of the Superconducting State in the K_{3}C_{60} Fulleride

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EN
Abstracts
EN
In the framework of the Eliashberg formalism, we have calculated the thermodynamic properties of the superconducting state in K_{3}C_{60} (the critical temperature T_C = 19.50 K). We have obtained the following results: (i) The critical value of the Coulomb pseudopotential is equal to 0.387. (ii) The values of the ratios R_1 ≡ 2Δp(0)/k_{B}T_C and R_2 ≡ ΔC(T_C)/C^{N}(T_C) are bigger than in the BCS model; R_1 = 4.01 and R_2 = 1.58. (iii) The electron effective mass m*_{e} reaches the highest value for T = T_C; [m*_{e}]_max = 2.86 m_{e}, where m_{e} is the bare electron mass. Additionally, we have given the analytical expressions for T_C, Δ(T), R_1 and R_2.
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EN
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Year
Volume
116
Issue
6
Pages
1053-1058
Physical description
Dates
published
2009-12
received
2009-05-14
(unknown)
2009-11-10
Contributors
  • Institute of Physics, Częstochowa University of Technology, al. Armii Krajowej 19, 42-200 Częstochowa, Poland
  • Institute of Physics, University of Zielona Góra, Prof. Szafrana 4a, 65-516 Zielona Góra, Poland
References
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Document Type
Publication order reference
Identifiers
YADDA identifier
bwmeta1.element.bwnjournal-article-appv116n614kz
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