Department of Physics, Faculty of Sciences, University of Isfahan, 81744 Isfahan, Iran.
J Phys Condens Matter. 2010 Oct 20;22(41):415701. doi: 10.1088/0953-8984/22/41/415701. Epub 2010 Sep 23.
We study transport properties and local density of states in a clean superconductor-normal metal-superconductor Josephson junction with triplet f-wave superconductors, based on the Eilenberger equation. Effects of the thickness of normal metal and a misorientation between the gap vector of the superconductors on the spin and charge currents are investigated. A spin current, which arises from the misalignment of the d-vectors, in the absence of charge current for some values of phase difference between the superconductors is found. We also find unconventional behavior of the spin current associated with the 0-π transition. The misalignment of the d-vectors also gives rise to a zero energy peak in the density of states in the normal metal.
我们基于 Eilenberger 方程研究了具有三重 f 波超导体的清洁超导-正常金属-超导约瑟夫森结中的输运性质和局域态密度。研究了正常金属厚度和超导体能隙矢量之间的取向失配对自旋和电荷电流的影响。我们发现,对于超导体之间某些相位差的值,即使没有电荷电流,也会由于 d 矢量的失配而产生自旋电流。我们还发现了与 0-π 跃迁相关的自旋电流的非常规行为。d 矢量的失配也会导致正常金属中态密度出现零能峰。