高Tc超导GdBa_2Cu_3O(7-δ)薄膜双晶晶界结  

High Tc Superconducting Thin Film Bicrystal GBJ

作　　者：杨建清[1] 赵成东[1] 于明湘[1] 万发宝 平一梅[1] 王瑞兰[2] 宣毅[2] 李宏成[2] 

机构地区：[1]西北大学物理系,西安710069 [2]中国科学院物理研究所国家超导实验室,北京100080

出　　处：《低温与超导》1997年第2期38-43,共6页Cryogenics and Superconductivity

基　　金：国家自然科学基金

摘　　要：在YSZ双晶基片上，制备了双晶高TcGdBa_2Cu_3O(7-δ)超导薄膜，晶界夹角为24°。采用光刻技术在晶界上刻出了不同尺寸的晶界结，观测了结的直流I－V特性和在10GHz微波辐照下结临界电流的压缩和Shapiro台阶，表明双晶结具有约瑟夫逊弱连接行为。在实验基础上，对结的特性进行了理论分析和数值模拟。The high Tc GdBa2Cu3O7-δ thin films have been fabricated on YSZ bicrystal substrate.The GBJ. were fabricated by photeetching technic. The DC I - V characteristic and I - V characteristic under microwave irradiation of GBJ were measurement. On the base of cxperimental, the theoretical analysis and phenomenon model of GBJ were performed. The Josephson weak link characteristics were shown by experimental results of our GBJ.

关 键 词：双晶结 1-V特性 超导体 薄膜 高TC 

分 类 号：TM26[一般工业技术—材料科学与工程]