Spin triplet superconductivity in Sr2RuO4
Artykuł w czasopiśmie
| Status: | |
| Autorzy: | Wysokiński Karol Izydor, Litak Grzegorz, Annett James F., Györffy Balazs L. |
| Rok wydania: | 2003 |
| Wersja dokumentu: | Drukowana | Elektroniczna |
| Język: | angielski |
| Numer czasopisma: | 2 |
| Wolumen/Tom: | 236 |
| Strony: | 325 - 331 |
| Web of Science® Times Cited: | 14 |
| Scopus® Cytowania: | 16 |
| Bazy: | Web of Science | Scopus |
| Efekt badań statutowych | NIE |
| Materiał konferencyjny: | NIE |
| Publikacja OA: | NIE |
| Abstrakty: | angielski |
| Sr2RuO4 is at present the best candidate for being a superconducting analogue of the triplet superfluidity in 3He. This material is a good (albeit correlated) Fermi liquid in the normal state and an exotic superconductor below Tc. The mechanism of superconductivity and symmetry of the order parameter are the main puzzling issues of on‐going research. Here we present the results of our search for a viable description of the superconducting state realised in this material. Our calculations are based on a three‐dimensional effective three‐band model with a realistic band structure. We have found a state with non‐zero order parameter on each of the three sheets of the Fermi surface. The corresponding gap in the quasi‐particle spectrum has line or point nodes on the α and β sheets and is complex with no nodes on the γ sheet. This state describes remarkably well a number of existing experiments including power low temperature dependence of the specific heat, penetration depth, thermal conductivity etc. The stability of the state with respect to disorder and different interaction parameters are also analyzed briefly. |
