| Zugriffsnummer | 47546 |
| Dokumenttyp | Zeitschriftenartikel |
| Sprache | Englisch |
| Titel | Model calculations of flux-tube nucleation in thin-film type I superconductors |
| Autor(in); Institution |
Buck, Wolfgang; 9.34, Tieftemperaturanlagen, PTB-Berlin
Selig, K. P.; Physikalisches Institut II, Universität Tübingen, Tübingen, GERMANY
Parisi, J.; Physikalisches Institut II, Universität Tübingen, Tübingen, GERMANY
|
| Quelle/Jahr | Journal of Low Temperature Physics: 45 (1981), 1-2, 21 - 35 |
| ISSN | 0022-2291 (PRINT) ; 1573-7357 (ONLINE) |
| DOI | |
| Verlag | Dordrecht [u.a.]: Springer |
| Freie Schlagworte | Magnetic Material ; Domain Wall ; Recent Experiment ; Nucleation Rate ; Flux Tube |
| Zusammenfassung | In the current-induced resistive state, multiquantum flux tubes are nucleated at the edge of thin-film strips of type I superconductors. The nucleation process can be theoretically described by an extended Gibbs free-energy barrier model. Within this model the size of the nucleated flux tubes is obtained by minimizing the total energy of the flux tube. The dependence of the flux-tube size on the nucleation rate and the transport current is calculated including the influence of the preceding flux tubes and the positive domain wall energy of type I superconductors. The interaction with the preceding flux tubes generates a steplike decrease of the flux-tube size with increasing nucleation frequency, whereas the wall energy establishes a minimum value of the flux-tube size. These calculations are in good agreement with recent experiments on the nucleation process of multiquantum flux tubes. |
