- Tytuł:
- On Possibility of Realization of d- or p-Wave Symmetry States in Anisotropic Superconductors
- Autorzy:
-
Gonczarek, R.
Krzyzosiak, M. - Powiązania:
- https://bibliotekanauki.pl/articles/2046732.pdf
- Data publikacji:
- 2006-04
- Wydawca:
- Polska Akademia Nauk. Instytut Fizyki PAN
- Tematy:
-
74.20.Rp
74.62.Yb - Opis:
- We consider a model of high-T$\text{}_{c}$ superconductors with an anisotropic boson-mediated pairing mechanism corresponding to the nearest-neighbor interactions, and the one-particle dispersion relation characterized by 2D Fermi surface nesting. Based upon the tight-binding or t-J approaches with half-filling we show that the effective pairing potential coefficients and the dispersion relation, which can be characterized by the parameterη=2t$\text{}_{1}$/t$\text{}_{0}$, have a diverse and mutually competing influence on the values of transition temperatures. The spin-singlet d-wave symmetry superconducting state is realized for small values ofη, whereas for sufficiently large values, the spin-triplet p-wave symmetry superconducting state should be formed. The specific heat jump and the isotope shift, as functions of the parameter η, are evaluated for the d- and p-wave symmetry.
- Źródło:
-
Acta Physica Polonica A; 2006, 109, 4-5; 493-498
0587-4246
1898-794X - Pojawia się w:
- Acta Physica Polonica A
- Dostawca treści:
- Biblioteka Nauki
Artykuł