Department of Physics, Southeast University, Nanjing 210096, People's Republic of China.
J Phys Condens Matter. 2010 Jun 9;22(22):225701. doi: 10.1088/0953-8984/22/22/225701. Epub 2010 May 20.
We report a theoretical study on a hybrid Josephson junction consisting of a proposed s( ± )-wave ferropnictide superconductor and a p-wave superconductor. It is found that the relative π phase shift intrinsic to the s( ± )-wave pairing can lead to an accumulated spin reversal effect at the junction interface and that the critical current has a vanishing point with the variation of the ratio of the interface resistances for each band. The spin reversal effect also appears with an increase of temperature and meanwhile the critical current exhibits a reentrant behavior. These findings can not appear for a usual s-wave state, so that they can be used to discriminate the s( ± )-wave pairing in superconducting ferropnictides from the conventional s-wave symmetry.
我们报告了一个由一个提出的 s(±) - 波铁电体超导体和一个 p 波超导体组成的混合约瑟夫森结的理论研究。结果发现，s(±) - 波配对的固有相对π相移可以导致结界面处的累积自旋反转效应，并且临界电流随每个带的界面电阻比的变化而具有消失点。随着温度的升高，自旋反转效应也会出现，同时临界电流表现出再进入行为。这些发现不会出现在通常的 s 波状态，因此可以用来区分超导铁电体中的 s(±) - 波配对与传统的 s 波对称性。
