摘要
用块状YBa_2Cu_3O_(7-4)超导体制备了宏观“微桥”结,在极低温下观测到具有回滞的直流(DC)约瑟夫森效应I～V特性曲线,以及交流(AC)约瑟夫森效应的微波感应台阶。给出“微挢”结的临界电流I_C和温度T满足的经验关系:{I-T/T_C}^(3/2)。
In some micro-bridge samples made of bulk Y-Ba-Cu-O materials, we observed the de and ac joscphson effects with hysteresis and microwave induced steps. The rela- tion I_c∞(1-T/T_c)^(3/2) was proved by our experiments.
出处
《内蒙古大学学报（自然科学版）》
CAS
CSCD
1991年第1期44-47,共4页
Journal of Inner Mongolia University：Natural Science Edition
