高温超导量子干涉器中的约瑟夫森结  

Josephson junctions in high-transition-temperature superconducting quantum interference devices

作　　者：高吉[1] 马平[1] 戴远东[1] 

机构地区：[1]北京大学物理学院人工微结构和介观物理国家重点实验室,北京100871

出　　处：《物理》2007年第11期869-878,共10页Physics

基　　金：国家重点基础研究发展计划(批准号:2006CB601007);国家自然科学基金(批准号:10674006)资助项目

摘　　要：超导量子干涉器(SQUID)是以约瑟夫森结为核心元件的极其灵敏的磁通-电压转换器.在最近20年间,超导电子学界利用多种铜氧化物高温超导材料,制造出了高温超导约瑟夫森结乃至高温超导量子干涉器(高TcSQUID);特别是,利用YBa2Cu3O7-δ(YBCO)制出了多种高温超导约瑟夫森结,并进而制成了具有一定实用性的高TcSQUID.文章主要是对高TcSQUID中所使用的高温超导约瑟夫森结进行评述.A superconducting quantum interference device （SQUID） is an extremely sensitive flux-to-voltage transducer with one or two Josephson junctions as its key elements. During the last two decades, high temperature superconducting Josephson junctions and even high-transition-temperature （ high-Tc ） SQUIDs have been fabricated from different kinds of high-transition-temperature superconducting cuprate materials. In particular, various types of high-temperature Josephson junctions, and even high-Tc SQUIDs of some practical value, have been fabricated from YBa2Cu3O7-δ（YBCO） . This paper will mainly review the high-temperature Josephson junctions that have been used in high-Tc SQUIDs.

关 键 词：凝聚态物理学 高温超导约瑟夫森结 超导量子干涉器 YBa2Cu3O7-δ(YBCO) 

分 类 号：O511[理学—低温物理]