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Josephson coupling across a long single-crystalline Cu nanowire

机译：约瑟夫森跨长单晶铜纳米线的耦合

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摘要

We report on a fabrication method and electron-transport measurements for submicron Josephson junctions formed by Cu nanowires coupling to superconducting planar Nb electrodes. The Cu nano-wires with a resistivity of ρ_(Cu)≌ 1 μΩcm at low temperatures consisting of single-crystalline segments have been obtained by templated electrodeposition using anodic aluminum oxide as a porous matrix. The current-voltage characteristics of the devices have been studied as a function of temperature and magnetic field. For all junctions, the critical current monotonically decreases with a magnetic field. The measured temperature and magnetic field dependencies are consistent with the model for one-dimensional diffusive superconductorormal metal/superconductor (SNS) Josephson junctions within the quasiclassical theory of superconductivity.
机译：我们报告了由铜纳米线耦合到超导平面Nb电极形成的亚微米约瑟夫森结的制造方法和电子传输测量。通过使用阳极氧化铝作为多孔基体的模板电沉积，获得了由单晶段组成的低温下电阻率为ρ_（Cu）≌1μΩcm的Cu纳米线。已经研究了器件的电流-电压特性随温度和磁场的变化。对于所有结，临界电流随磁场单调减小。测得的温度和磁场依存性与准超经典准经典理论中的一维扩散超导体/正态金属/超导体（SNS）约瑟夫森结的模型一致。

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  • 来源
    《Applied Physics Letters》 |2017年第22期|222605.1-222605.5|共5页
  • 作者

    O. V. Skryabina; S. V. Egorov; A. S. Goncharova; A. A. Klimenko; S. N. Kozlov; V. V. Ryazanov; S. V. Bakurskiy; M. Yu. Kupriyanov; A. A. Golubov; K. S. Napolskii; V. S. Stolyarov;

  • 作者单位

    Institute of Solid State Physics RAS, 142432 Chernogolovka, Russia,Moscow Institute of Physics and Technology, 141700 Dolgoprudny, Russia;

    Institute of Solid State Physics RAS, 142432 Chernogolovka, Russia,Russian Quantum Center, Skolkovo, Moscow Region, 143025, Russia;

    Department of Materials Science, MSU, 119991 Moscow, Russia;

    Department of Materials Science, MSU, 119991 Moscow, Russia;

    Institute of Solid State Physics RAS, 142432 Chernogolovka, Russia,Fundamental Physical and Chemical Engineering Department, MSU, 119991 Moscow, Russia;

    Institute of Solid State Physics RAS, 142432 Chernogolovka, Russia,Moscow Institute of Physics and Technology, 141700 Dolgoprudny, Russia,Russian Quantum Center, Skolkovo, Moscow Region, 143025, Russia,National University of Science and Technology MISIS, 4 Leninsky prosp., 119049 Moscow, Russia;

    Moscow Institute of Physics and Technology, 141700 Dolgoprudny, Russia,National University of Science and Technology MISIS, 4 Leninsky prosp., 119049 Moscow, Russia,Skobeltsyn Institute of Nuclear Physics, MSU, 119991 Moscow, Russia;

    Moscow Institute of Physics and Technology, 141700 Dolgoprudny, Russia,National University of Science and Technology MISIS, 4 Leninsky prosp., 119049 Moscow, Russia,Skobeltsyn Institute of Nuclear Physics, MSU, 119991 Moscow, Russia,Solid State Physics Department, KFU, 420008 Kazan, Russia;

    Moscow Institute of Physics and Technology, 141700 Dolgoprudny, Russia,Faculty of Science and Technology and MESA+ Institute of Nanotechnology, 7500 AE Enschede, The Netherlands;

    Department of Materials Science, MSU, 119991 Moscow, Russia,Department of Chemistry, MSU, 119991 Moscow, Russia;

    Institute of Solid State Physics RAS, 142432 Chernogolovka, Russia,Moscow Institute of Physics and Technology, 141700 Dolgoprudny, Russia,Fundamental Physical and Chemical Engineering Department, MSU, 119991 Moscow, Russia,Solid State Physics Department, KFU, 420008 Kazan, Russia;

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  • 入库时间 2022-08-18 03:14:06

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