Temat: 74.25.Bt - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: The Thermodynamic Critical Field οf $YNi_2B_2C$ Superconductor
Autorzy:: Jarosik, M.
Szczęśniak, R.
Szczęśniak, D.
Powiązania:: https://bibliotekanauki.pl/articles/1535384.pdf
Data publikacji:: 2010-11
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 74.20.Fg
74.25.Bt
74.25.Ha
Opis:: In the presented work the dependence of the thermodynamic critical field $(H_{C})$ on the temperature for the $YNi_2B_2C$ superconductor was determined in the framework of the Eliashberg formalism. The numerical calculations were conducted with the use of the modified transport Eliashberg function. It has been stated that the normalized field function $H_{C}(T)//H_{C}(0)$ correctly reproduces the experimental data.
Źródło:: Acta Physica Polonica A; 2010, 118, 5; 1031-1033
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 2.

Tytuł:: Thermodynamic Critical Magnetic Field for Chlorine Halide Superconductor at High Pressure
Autorzy:: Szczęśniak, D.
Szczęśniak, R.
Powiązania:: https://bibliotekanauki.pl/articles/1382363.pdf
Data publikacji:: 2014-07
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 74.20.Fg
74.25.Bt
74.62.Fj
Opis:: At present, hydrides are considered as a one of the most interesting high-temperature superconductors with the classical electron-phonon pairing mechanism. In the present paper, we have analyzed the dependence of the thermodynamic critical magnetic field $(H_c)$ on the temperature for the chlorine halide superconductor. The calculations have been made in the framework of the Eliashberg formalism for the following pressure values: $p_{1}$=320 GPa and $p_{2}$=360 GPa. We have shown that $H_c$ increases strongly with the increase of the pressure: $[H_c(0)]_{p_{2}}$/$[H_c(0)]_{p_{1}}$= 1.43. Furthermore, the dimensionless ratio: $R_{H}$ ≡ $T_cC^{N}(T_c)$/$H_c^{2}(0)$, where $T_c$ and $C^{N}$ denote the critical temperature and the specific heat of the normal state, differs from the value predicted by the Bardeen-Cooper-Schrieffer theory. In particular: $[R_{H}]_{p_{1}}$=0.166 and $[R_{H}]_{p_{2}}$=0.158.
Źródło:: Acta Physica Polonica A; 2014, 126, 1; 344-345
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 3.

Tytuł:: Characterization of Novel High-Pressure Close-Packed Superconducting Phase of Boron
Autorzy:: Szczęśniak, D.
Szczęśniak, R.
Powiązania:: https://bibliotekanauki.pl/articles/1385110.pdf
Data publikacji:: 2015-02
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 74.25.Bt
74.62.Fj
74.20.Fg
Opis:: We report study on the thermodynamic properties of the novel high-pressure superconducting phase of boron with hexagonal P6₃/mcm structure. Our analysis is conducted at the pressure of p=400 GPa, which is motivated by the highest value of the superconducting transition temperature $(T_{C})$ observed previously under such conditions for the P6₃/mcm boron. Our investigations of the thermodynamic properties are performed within the Eliashberg formalism, due to the strong-coupling character of the considered material. In particular, we calculate the thermodynamic properties of the superconducting state which allows us to determine the values of the characteristic dimensionless parameters; the zero-temperature energy gap to the critical temperature, the ratio of the specific heats, as well as the ratio connected with the zero-temperature thermodynamic critical field.
Źródło:: Acta Physica Polonica A; 2015, 127, 2; 254-256
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

Informacja