首页> 外文会议>Conference on High Temperature Superconductivity Coral Gables, Florida January 7-13 1999 >c-Axis twist Bi_2Sr_2CaCu_2O_(8_ delta ) josephson junctions: a new phase-sensitive test of order parameter symmetry
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c-Axis twist Bi_2Sr_2CaCu_2O_(8_ delta ) josephson junctions: a new phase-sensitive test of order parameter symmetry

机译:c轴扭曲Bi_2Sr_2CaCu_2O_(8_ delta)josephson结:一种新的阶跃参数对称性的相敏测试

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Li et al. found that the critical current density J_c~J across atomically clean c-axis twist junctions of Bi_2Sr_2Ca Cu_2O_(8+ delta ) is the same as that of the constituent single crystal, J_c~S, independent of the twist angle PHI _0, even at T_c. We investigated theoretical if a d_(x~2-y~2)- wave order parameter might twist by mixing in d_(xy) components, but find that such twisting cannot ossibly explain the data near to T_c. Hence, the order parameter contains an s-wave component, but not any d_(x~2-y~2)-wave component. In addition, the c-axis junction tricrystal experiment which does not rely upon expensive substrates.
机译:Li等。发现Bi_2Sr_2Ca Cu_2O_(8+ delta)的原子清洁c轴扭曲结上的临界电流密度J_c〜J与组成的单晶J_c〜S相同,与扭曲角PHI _0无关,即使在T_c。我们研究了d_(x〜2-y〜2)-波次参数是否可能由于混入d_(xy)分量而发生扭曲,但从理论上进行了研究,但发现这种扭曲不可能表面上解释T_c附近的数据。因此,阶数参数包含s波分量,但不包含任何d_(x〜2-y〜2)波分量。另外,不依赖昂贵基板的c轴结三晶体实验。

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