Enhanced superconducting transition temperature in electroplated rhenium
Enhanced superconducting transition temperature in electroplated rhenium
复制标题
提高电镀铼的超导转变温度
DOI：
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发表时间：
2018
期刊：
影响因子：
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通讯作者：
Xian Wu
中科院分区：
文献类型：
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作者：
D. Pappas;D. David;R. Lake;M. Bal;R. Goldfarb;D. A. Hite;Eunja Kim;H. Ku;J. Long;C. McRae;Lee D. Pappas;A. Roshko;J. Wen;B. Plourde;I. Arslan;Xian Wu
我们表明，电镀Re膜在多层与贵金属，如铜，Au，和Pd有一个增强的超导临界温度相对于以前的方法制备Re。直流电阻和磁化率表明临界温度约为6 K。在1.8 K下，磁场响应随磁场的变化表明了II型超导性，其上临界磁场约为2.5 T。在液氦温度以上测得临界电流密度大于107 A/m2。在低于临界温度下获得低损耗的射频多层沉积到谐振器上的商业电路板上的铜迹线。这些电镀的超导薄膜可以集成到一个广泛的标准组件的低温electronics.We表明，多层电镀Re膜与贵金属，如Cu，Au，和Pd具有增强的超导临界温度相对于以前的方法制备Re。直流电阻和磁化率表明临界温度约为6 K。在1.8 K下，磁场响应随磁场的变化表明了II型超导性，其上临界磁场约为2.5 T。在液氦温度以上测得临界电流密度大于107 A/m2。在低于临界温度下获得低损耗的射频多层沉积到谐振器上的商业电路板上的铜迹线。这些电镀超导薄膜可以集成到各种低温电子设备的标准组件中。
We show that electroplated Re films in multilayers with noble metals such as Cu, Au, and Pd have an enhanced superconducting critical temperature relative to previous methods of preparing Re. The dc resistance and magnetic susceptibility indicate a critical temperature of approximately 6 K. The magnetic response as a function of field at 1.8 K demonstrates type-II superconductivity, with an upper critical field on the order of 2.5 T. Critical current densities greater than 107 A/m2 were measured above liquid-helium temperature. Low-loss at radio frequency was obtained below the critical temperature for multilayers deposited onto resonators made with Cu traces on commercial circuit boards. These electroplated superconducting films can be integrated into a wide range of standard components for low-temperature electronics.We show that electroplated Re films in multilayers with noble metals such as Cu, Au, and Pd have an enhanced superconducting critical temperature relative to previous methods of preparing Re. The dc resistance and magnetic susceptibility indicate a critical temperature of approximately 6 K. The magnetic response as a function of field at 1.8 K demonstrates type-II superconductivity, with an upper critical field on the order of 2.5 T. Critical current densities greater than 107 A/m2 were measured above liquid-helium temperature. Low-loss at radio frequency was obtained below the critical temperature for multilayers deposited onto resonators made with Cu traces on commercial circuit boards. These electroplated superconducting films can be integrated into a wide range of standard components for low-temperature electronics.