Reargument over E ~ j relation of high temperature superconductors |
| |
Authors: | JIN Hao CHEN Lin ZHANG Yuheng |
| |
Institution: | Structure Research Laboratory, University of Science and Technology of China, |
| |
Abstract: | The E ∼ j relation of an HTSC slab is solved strictly within the Bean’s model in two different situations where the system
does and does not reach equilibrium state under the magnetic relaxation respectively, with both forward and backward hopping
taken into consideration (the backward hopping means the hopping from the barriers with low energy to high ones). Our results
suggest and rigorously prove that the In E ∼ In j curves show only positive curvature on the side of slab where the directions
of current-created field and the applied field are the same, while they show both positive and negative curvatures at a certain
field range on the other side where the directions are opposite. The relationship of the positive and negative curvatures
with the critical current, applied field and temperature is also discussed. |
| |
Keywords: | flux dynamics thermal activated creep magnetic relaxation |
本文献已被 万方数据 SpringerLink 等数据库收录! |