高温超导薄膜共面谐振器的微波响应研究  

A STUDY ON THE MICROWAVE RESPONSE OF HTS THIN FILMS BY COPLANAR RESONATOR TECHNIQUE

作　　者：史力斌[1] 王云飞[1] 张琛[1] 张国华[1] 王东[1] 柯于洋[1] 罗胜[1] 张雪强[2] 李春光[2] 黎红[2] 何豫生[2] 

机构地区：[1]北京科技大学应用科学学院物理系,北京100083 [2]中国科学院物理所,北京100080

出　　处：《低温物理学报》2006年第4期381-385,共5页Low Temperature Physical Letters

摘　　要：通过对YBCO／LAO和TBCCO／LAO高温超导薄膜共面谐振器共振频率工与温度依赖关系的测量分析可以得到YBCO在绝对零度时的穿透深度λ0～198nm，TBCCO在绝对零度时的穿透深度λ0-200nm．对上述两种共面谐振器的有载品质因数和插入损耗随温度变化的测量，结果表明TBCCO超导薄膜比YBCO具有更低的微波表面电阻．In the paper, OK penetration depths of λ0 - 198nm for YBCO and λ0 - 20nm for TBCCO can be obtained by analyzing temperature dependence of resonant frequency of coplanar resonator. Microwave surface resistances Rs of YBCO/LAO and TBCCO/LAO were also deduced from the quality factors and insert loss of coplanar resonators. It was found that the surface resistance Rs of TBCCO is smaller than that of YBCO.

关 键 词：YBCO TBCCO 薄膜 微波响应 共面谐振器 

分 类 号：O511[理学—低温物理]