Fundamental Theory of Spin Transport and Design of Novel Devices

在这项研究中，我们提出了自旋量子交叉器件，它包括有机分子夹在两个铁磁金属的边缘是交叉的。利用非平衡绿色函数理论研究了它们的自旋输运特性。同时，我们制作了一个自旋量子交叉器件原型，并与实验结果进行了比较，验证了理论的正确性。利用安德森哈密顿量，我们成功地得到了自旋输运的一般公式，并在实验上成功地实现了自旋量子交叉器件。我们还发现，发展的理论预测的实验结果定量。

In this study, we have proposed spin quantum cross devices, which consist of organic molecules sandwiched between two ferromagnetic metals whose edges are crossed. We have theoretically investigated the spin transport characteristics of them using non-equilibrium Green's function. Also, we have made a prototype-spin quantum cross device and verified the theory compared with the experimental results. As a result, we have successfully obtained a general formula for spin transport using Anderson Hamiltonian, and succeeded in realizing a spin quantum cross device experimentally. We have also found that the developed theory predicts the experimental results quantitatively.