Long-Range triplet Josephson Current Modulated by the Interface Magnetization Texture
arXiv:1309.6807 · doi:10.1209/0295-5075/104/37003
Abstract
We have investigated the Josephson coupling between two s-wave superconductors separated by the ferromagnetic trilayers with noncollinear magnetization. We find that the long-range triplet critical current will oscillate with the strength of the exchange field and the thickness of the interface layer, when the interface magnetizations are orthogonal to the central magnetization. This feature is induced by the spatial oscillations of the spin-triplet state |\uparrow\downarrow>+|\downarrow\uparrow> in the interface layer. Moreover, the critical current can exhibit a characteristic nonmonotonic behavior, when the misalignment angle between interface magnetization and central ferromagnet increases from 0 to π/2. This peculiar behavior will take place under the condition that the original state of the junction with the parallel magnetizations is the πstate.
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- Magnetism induced by nonlocal spin-entangled electrons in a superconducting spin-valve
- Long-Range triplet Josephson Current driven by the bias voltage
- Long-range superharmonic Josephson current and spin-triplet pairing correlations in a junction with ferromagnetic bilayers