Coherent potential approximation for d-wave superconductivity in disordered systems
Artykuł w czasopiśmie
| Status: | |
| Autorzy: | Martin Andrew M., Litak Grzegorz, Györffy Balazs L., Annett James F., Wysokiński Karol Izydor |
| Rok wydania: | 1999 |
| Wersja dokumentu: | Drukowana | Elektroniczna |
| Język: | angielski |
| Numer czasopisma: | 10 |
| Wolumen/Tom: | 60 |
| Strony: | 7523 - 7535 |
| Impact Factor: | 3,008 |
| Web of Science® Times Cited: | 33 |
| Scopus® Cytowania: | 37 |
| Bazy: | Web of Science | Scopus |
| Efekt badań statutowych | NIE |
| Materiał konferencyjny: | NIE |
| Publikacja OA: | NIE |
| Abstrakty: | angielski |
| A coherent-potential approximation CPA is developed for s-wave and d-wave superconductivity in disordered systems. We show that the CPA formalism reproduces the standard pair breaking formula, the self-consistent Born approximation and the self-consistent T-matrix approximation in the appropriate limits. We implement the theory and compute Tc for s-wave and d-wave pairing using an attractive nearest-neighbor Hubbard model featuring both binary-alloy disorder and a uniform distribution of scattering site potentials. We determine the density of states and examine its consequences for low-temperature heat capacity. |
