C-axis Transport Properties of YBa_2Cu_3O_(7-δ)/PrBa_2Cu_3O_(7-δ)/YBa_2Cu_3O_(7-δ) Trilayer Josephson Junctions

机译：YBA_2CU_3O_（7-δ）/ prba_2cu_3o_（7-δ）/ yba_2cu_3o_（7-δ）三层josephson结的c轴传输属性

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In this paper we report on experimental investigation of c-axis oriented YBa_2Cu_3O_(7-δ)/PrBa_2Cu_3O_(7-δ)/YBa_2Cu_3O_(7-δ) trilayer junctions with three different barrier thicknesses (20 nm, 75 nm and 100 nm) and their Josephson characteristics. Josephson currents are detected for all junctions. The critical current density for 100 nm barrier sheet is 115 A/cm~2 which yields a Josephson penetration depth of 4 μm. Compared to the junction width of 40 fun this indicates that the Josephson junction is in the wide limit. Doping the barrier with gallium yields a one order of magnitude higher resistivity and decreases the critical current density of the junction. This makes it possible to prepare junctions in the small limit where the current distribution is homogeneous.

机译：在本文中，我们报告了具有三种不同阻挡厚度（20nm，75nm和100nm）的C轴取向YBA_2CU_3O_（7-Δ）/ yba_2cu_（7-Δ）/ yba_2cu_30_（7-δ）三层交界的实验研究他们的约瑟夫森特征。针对所有连接点检测约瑟夫森电流。 100nm阻挡片的临界电流密度为115A / cm〜2，其产生4μm的Josephson渗透深度。与40乐趣的结宽相比，这表明约瑟夫森交界处处于宽限制。用镓掺杂屏障产生一种较高的电阻率较高，并降低结的临界电流密度。这使得可以在当前分布是均匀的小极限中制备结的结。

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《European conference on applied superconductivity》|1997年||共4页
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A. Schattke; M. Engelmann; J. C. Martinez; H. Adrian;
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2. Normal State Resistivity of YBa_2Cu_3O_(7-δ) /PrBa_2Cu_(2.8)Ga_(0.2)O_(7-δ) c-axis Superlattices: Evidence for an Underdoping Effect of YBa_2Cu_3O_(7-δ) [J] . B. Leridon, A. Defossez, J. Dumont Journal of Low Temperature Physics . 1999,第5a6期

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机译：YBA_2CU_3O_（7-δ）/ prba_2cu_3o_（7-δ）/ yba_2cu_3o_（7-δ）三层josephson结的c轴传输属性
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C-axis Transport Properties of YBa_2Cu_3O_(7-δ)/PrBa_2Cu_3O_(7-δ)/YBa_2Cu_3O_(7-δ) Trilayer Josephson Junctions

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