单量子点输运性质的研究

Study of Single Quantum Dot Transport Property

用非平衡格林函数的方法分析处于磁场中单量子点输运的特性。磁场使量子点的能级劈裂。通过调节夹角和极化强度的值,电导在自旋向上的量子点能级处随着夹角的增加而减小,同时随着极化强度的增加而增加。而在自旋向下处相反的。最后讨论了磁阻的特性。

We use the nonequilibrium Green function method to discuss thermoelectric characteristic of single quantum dot in magnetic field.By adjusting the value of the angle and the polarization,electrical conductance G increases as the Angle decrease and the polarization increase.Finally,the characteristics of magnetic resistance is discussed.