Nb/Al-oxide/Nb and NbN/MgO/NbN Tunnel Junctions in Large Series Arrays for Voltage Standards
Nb/Al-oxide/Nb and NbN/MgO/NbN Tunnel Junctions in Large Series Arrays for Voltage Standards
复制标题
用于电压标准的大型串联阵列中的 Nb/Al-氧化物/Nb 和 NbN/MgO/NbN 隧道结
DOI：
10.1143/jjap.25.l343
复制
发表时间：
1986
影响因子：
1.5
通讯作者：
S. Kosaka
中科院分区：
文献类型：
--
作者：
J. Niemeyer;Y. Sakamoto;E. Vollmer;J. Hinken;A. Shoji;H. Nakagawa;S. Takada;S. Kosaka
用Nb/An-氧化物/Nb-和Nb/NbN/MgO/NbN/Nb三明治制作了1440个约瑟夫森隧道结的串联阵列，阵列提供了至少1V的微波感应恒压阶跃。硬超导隧道结对室温存储和热循环的良好稳定性表明，这些阵列可能非常有用，可用于构建实用的高精度持久约瑟夫森电压标准。
Series arrays of 1440 Josephson tunnel junctions were fabricated out of Nb/AN-oxide/Nb- and Nb/NbN/MgO/NbN/Nb-sandwiches The arrays provide microwave-induced constant voltage steps of at least one volt. The good stability of hard superconductor tunnel junctions against room temperature storage and thermal cyling suggests that these arrays might be very useful for the constructions of practical lasting Josephson voltage standards of high precision.