‘π‐state’ induced by impurities with a repulsive interaction
Artykuł w czasopiśmie
| Status: | |
| Autorzy: | Litak Grzegorz, Krawiec Mariusz |
| Rok wydania: | 2005 |
| Wersja dokumentu: | Drukowana | Elektroniczna |
| Język: | angielski |
| Numer czasopisma: | 2 |
| Wolumen/Tom: | 242 |
| Strony: | 438 - 442 |
| Web of Science® Times Cited: | 2 |
| Scopus® Cytowania: | 2 |
| Bazy: | Web of Science | Scopus |
| Efekt badań statutowych | NIE |
| Materiał konferencyjny: | NIE |
| Publikacja OA: | NIE |
| Abstrakty: | angielski |
| We study the properties of a quantum impurity embedded in a superconducting host. The superconductor is described by the negative U Hubbard model while the impurity introduces a repulsive interaction to the system. We discuss the influence of this ‘on‐impurity’ Coulomb repulsion on the local properties (density of states, electron pairing) of the superconductor. We show the condition of π‐like behaviour, defined as two subsystems having a phase difference of π, in the system by using a proper combination of attractive pairing interaction and repulsive one located at impurity site. |
