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首页> 外文期刊>Physica, C. Superconductivity and its applications >Preparation and properties of (Hg,Re)-1212 Josephson junctions using STO and LSAT bicrystal substrates
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Preparation and properties of (Hg,Re)-1212 Josephson junctions using STO and LSAT bicrystal substrates

机译：用STO和LSAT双晶衬底制备（Hg，Re）-1212 Josephson结及其性质

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Bicrystal junctions with Hg-based superconducting thin films were fabricated on SrTiO3 (STO) and (LaAlO3)(0.3)(SrAl0.5Ta0.5O3)(0.7) (LSAT) substrates. (Hg,Re)Ba2CaCu2Oy ((Hg,Re)-1212) thin films with T-c = 109-116 K were prepared on the bicrystal substrates with misorientation angles of 5-45degrees for STO and 24-36.8degrees for LSAT, respectively. For angles larger than 20degrees, the bicrystal junctions exhibited resistively shunted junction like current-voltage characteristics at 4.2 and 77 K. Scanning electron microscope (SEM) observation revealed that precipitates existed along the (Hg,Re)1212 bicrystal boundary on STO, while no such defects were observed along the boundary on LSAT. The junctions on LSAT behaved as Josephson junctions with a more homogeneous current distribution, being consistent with the SEM results. (C) 2002 Elsevier Science B.V. All rights reserved. [References: 12]
机译：在SrTiO3（STO）和（LaAlO3）（0.3）（SrAl0.5Ta0.5O3）（0.7）（LSAT）衬底上制作了基于Hg的超导薄膜的双晶结。在双晶衬底上制备了T-c = 109-116 K的（Hg，Re）Ba2CaCu2Oy（（Hg，Re）-1212）薄膜，其STO取向角为5-45度，LSAT取向角为24-36.8°。对于大于20度的角度，双晶结在4.2和77 K时表现出电阻分流结，如电流-电压特性。扫描电子显微镜（SEM）观察发现，沿STO的（Hg，Re）1212双晶边界存在析出物，而没有沿LSAT的边界观察到了此类缺陷。 LSAT上的结表现为约瑟夫森结，电流分布更均匀，与SEM结果一致。 （C）2002 Elsevier Science B.V.保留所有权利。 [参考：12]

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