Nonlinear dissipative structures - the kink and the soliton -due to magnetic flux creep in superconductors
The dynamics of the resistive state in type II superconductors is investigated taking into account the energy dissipated in the course of magnetic flux creep within superconducting sample. Thermally stimulated flux creep establishes the positive feedback between thermal and electromagnetical disturbances and therefore is responsible for the emergence of the nonlinear dissipative structures in superconductors. Special attention is paid to the analysis of the kink-like and the soliton-like solutions of the formulated system of general equations. The structure of the nonlinear waves is described, the velocity dependence upon the wave amplitude is determined. It is found, that the kink wave is quite symmetrical, while the soliton profile, being essentially asymmetrical, is characterized by sharp (exponential) {open_quotes}tail{close_quotes} at the rear front and by the wide forefront. It is shown, that localized dissipative structures are stable with respect to small thermomagnetic disturbances of the critical state.
- OSTI ID:
- 127793
- Report Number(s):
- CONF-920376-; ISSN 0003-0503; TRN: 96:000273
- Journal Information:
- Bulletin of the American Physical Society, Vol. 37, Issue 9; Conference: Meeting of the American Physical Society, Indianapolis, IN (United States), 16-20 Mar 1992; Other Information: PBD: Dec 1992
- Country of Publication:
- United States
- Language:
- English
Similar Records
Nonlinear waves in superconductors
Nonlinear self-similar dynamics of the magnetic flux penetration into superconductors