Department of Physics, Faculty of Sciences, University of Isfahan, 81744 Isfahan, Iran.
J Phys Condens Matter. 2011 Jul 13;23(27):275702. doi: 10.1088/0953-8984/23/27/275702. Epub 2011 Jun 17.
Charge and spin Josephson currents in a ballistic superconductor-ferromagnet-superconductor junction with spin-triplet pairing symmetry are studied using the quasiclassical Eilenberger equation. The gap vector of superconductors has an arbitrary relative angle with respect to magnetization of the ferromagnetic layer. We clarify the effects of the thickness of the ferromagnetic layer and the magnitude of the magnetization on the Josephson charge and spin currents. We find that the 0-π transition can occur when the misorientation angle between the exchange field of the ferromagnetic layer and the d-vector is smaller than π/4. We also show how spin current flows due to misorientation between the exchange field and the d-vector.
使用准经典 Eilenberger 方程研究了具有三重态配对对称性的弹道超导-铁磁体-超导体结中的电荷和自旋约瑟夫森电流。超导的能隙向量相对于铁磁层的磁化具有任意的相对角度。我们澄清了铁磁层的厚度和磁化强度对约瑟夫森电荷和自旋电流的影响。我们发现，当铁磁层的交换场和 d-向量之间的偏转角小于π/4 时，可能会发生 0-π 转变。我们还展示了由于交换场和 d-向量之间的偏转而产生自旋流的方式。
