Abstract
The high-temperature ceramic superconductors have exceptionally broad resistive transitions which are highly sensitive to even very weak magnetic fields1. Their magnetization shows strong hysteresis, and decays very slowly with time, often changing over a period of hours or even days2. They show a strong nonresonant microwave absorption which is magnetic-field dependent, nonlinear in the incident intensity, and hysteretic3. At lower frequencies, they show strong generation of higher harmonics when they are disturbed by radiofrequency pulses4.
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References
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Lee, K.H., Stroud, D., Chung, J.S. (1990). Relaxation and Dynamics in Granular Superconductors and Superconducting Arrays. In: Campbell, I.A., Giovannella, C. (eds) Relaxation in Complex Systems and Related Topics. NATO ASI Series, vol 222. Springer, Boston, MA. https://doi.org/10.1007/978-1-4899-2136-9_17
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DOI: https://doi.org/10.1007/978-1-4899-2136-9_17
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