- Tytuł:
- Thermodynamic Properties of the Superconducting State in the $K_{3}C_{60}$ Fulleride
- Autorzy:
-
Szczęśniak, R.
Barasiński, A. - Powiązania:
- https://bibliotekanauki.pl/articles/1585095.pdf
- Data publikacji:
- 2009-12
- Wydawca:
- Polska Akademia Nauk. Instytut Fizyki PAN
- Tematy:
-
74.20.Fg
74.70.Wz - Opis:
- 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 $m_{e}^\ast$ reaches the highest value for $T = T_C$; [$m_{e}^\ast]_\text{max}$ = 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 $R_2$.
- Źródło:
-
Acta Physica Polonica A; 2009, 116, 6; 1053-1058
0587-4246
1898-794X - Pojawia się w:
- Acta Physica Polonica A
- Dostawca treści:
- Biblioteka Nauki
Artykuł