摘要
分析和计算了双结超导环在无偏置电流时的磁通、环流、自由能与外磁场的关系 .发现双结环与单结环在磁场中的行为有所不同 .当两个结的Ic 相等时 ,双结环在 1<β =2πLIcΦ0<2时 ,若无偏置电流 ,总磁通Φ、环流I与外磁通Φe 的关系仍然是非回滞的曲线 .仅当 β≥ 2时 ,曲线才出现回滞 .另外双结环有两支解 ,并且每支解的周期为2Φ0 .
Numerical simulations and analyses have been applied to find the relationships between magnetic flux, ring current,free energy of superconducting rings and external magnetic field. It is found that a double-junction superconducting ring has a different behavior from a single-junction ring. When the I-c values are identical, a double-junction ring has a non-hysteresis behavior when beta < 2.The hysteresis exists only when beta greater than or equal to 2. And a double-junction ring has a double-branch solution with 2Phi(0) period.
出处
《物理学报》
SCIE
EI
CAS
CSCD
北大核心
2003年第2期473-477,共5页
Acta Physica Sinica
基金
国家重点基础研究项目 (批准号 :G19990 64 6 0 9)资助的课题~~
