Electron resonance-transmission through a driven quantum well with spin-orbit coupling

• 来源期刊: 中国物理B（英文版）
• 关键词: Fano resonance Floquet channel spin-orbit coupling
• 年，卷（期）: 2008,（7）
• 页码范围: 2662-2669
• 页数: 8页
• 语种: 英文

摘要

We have studied the spin-dependent electron transmission through a quantum well driven by both dipole-type and homogeneous oscillating fields. The numerical evaluations show that Dresselhaus spin-orbit coupling induces the splitting of asymmetric Fano-type resonance peaks in the conductivity, in which the dipole modulation and the homogeneous modulation are equivalent. Therefore, we predict that the dipole-type oscillation, which is more practical in the experimental setup, can be used to realize the tunable spin filters by adjusting the field oscillation-frequency and the amplitude as well.