并联导体在冷却通过超导转变时的电流均分
超导电性
2009-11-11 v3 材料科学
摘要
我们的实验表明，对于两根或多根长度通常不同的导线，并联连接并接入直流电源时，当组合冷却至超导转变温度Tc时，电流比趋于一致，并在低于该温度时保持在该值。这种无需外部精细调节的总电流向均分方向的重新分布令人惊讶。从物理上可以通过一种涉及II型超导材料导线中输运电流相关的磁通流电阻的机制来理解。正是磁通流电阻随电流增大这一事实，驱动了电流分配趋向均分。
引用
@article{arxiv.cond-mat/0510099,
title = {Equipartition of Current in Parallel Conductors on Cooling Through the Superconducting Transition},
author = {S. Sarangi and S. P. Chockalingam and Raghav G Mavinkurve and S. V. Bhat and N. Kumar},
journal= {arXiv preprint arXiv:cond-mat/0510099},
year = {2009}
}
备注
Revised version of J.Phys. Condens.Matter; vol. 18(2006) L143-L147 14 pages including 3 figures; provided an explanation in terms of the physical mechanism of flux flow induced resistance that is proportional to the impressed current. We are adding a simple, physically robust derivation of our equipartition without taking resort to the minimum dissipation principle