Sweep-Rate Dependent Reversal of Magnetic Moment in Superconducting Films
| العنوان: | Sweep-Rate Dependent Reversal of Magnetic Moment in Superconducting Films |
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| المؤلفون: | Pavlo Mikheenko, M. S. Colclough, R. A. Chakalov, K. Kawano, C. M. Muirhead |
| المصدر: | Modern Physics Letters B. 17:635-647 |
| بيانات النشر: | World Scientific Pub Co Pte Lt, 2003. |
| سنة النشر: | 2003 |
| مصطلحات موضوعية: | Superconductivity, Materials science, Magnetoresistance, Condensed matter physics, Magnetic energy, Magnetic moment, Relaxation (NMR), Demagnetizing field, Statistical and Nonlinear Physics, Condensed Matter Physics, Magnetic reactance, Magnetic field |
| الوصف: | We report on a dynamical effect in YBa 2 Cu 3 O x (YBCO) films and YBCO/CMR (Colossal Magnetoresistive) multilayers, in which variations in the magnetic field sweep rate can change, or reverse the sign of, the magnetic moment. The effect occurs in thin films having a low critical current density, either intrinsically or as a result of operation near the critical temperature. We attribute this effect to the large demagnetizing field present in the films, leading to a relaxation in the non-equilibrium vortex distribution, in which current near the edge of the film changes direction. We have investigated this effect in a variety of systems by magnetometery, and provide some magneto-optical evidence of its mechanism. |
| تدمد: | 1793-6640 0217-9849 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_________::ff1ac774d94d3b9bd6c35f78acdd06db https://doi.org/10.1142/s0217984903005664 |
| رقم الأكسشن: | edsair.doi...........ff1ac774d94d3b9bd6c35f78acdd06db |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 17936640 02179849 |
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