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Magnetic Josephson Junctions on Nb Four-layer Structure for Half Flux Quantum Circuits

机译:半磁通量子电路的Nb四层结构上的磁性约瑟夫森结

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We successfully fabricated magnetic Josephson junctions integrated on a Nb four-layer superconducting structure for demonstrating half flux quantum (HFQ) circuits. In the developed process, we adopted a $0-0-pi$ SQUID instead of the $0-pi$ SQUID as the basic element of the HFQ circuits. In this work, we characterized the Nb/PdNi/Nb magnetic Josephson junctions on the Nb four-layer structures fabricated by two different processes. We measured the I-V characteristics of junctions in liquid helium at 4.2 K. The results showed that the fabricated junctions had properties comparable to conventional ones on Si wafers.
机译:我们成功地制造了集成在Nb四层超导结构上的磁性约瑟夫森结,用于演示半通量量子(HFQ)电路。在开发过程中,我们采用了 $ 0-0- \ pi $ 鱿鱼代替 $ 0- \ pi $ SQUID作为HFQ电路的基本元素。在这项工作中,我们表征了通过两种不同工艺制造的Nb四层结构上的Nb / PdNi / Nb磁性约瑟夫逊结。我们在4.2 K下测量了液氦中结的I-V特性。结果表明,所制作的结具有可与Si晶片上的常规结相媲美的特性。

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