arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 0906.4854cond-mat.mes-hallcond-mat.stat-mech
收藏

受驱动双量子点中的非线性自旋-电荷动力学

Nonlinear Spin-Charge Dynamics in a Driven Double Quantum Dot

D. V. Khomitsky, E. Ya. Sherman

摘要:

半经典地研究了具有自旋轨道相互作用的双量子点中电子的非线性坐标和自旋耦合动力学。该系统由频率与轨道或磁场中的塞曼共振相匹配的电场驱动。计算的自旋状态的演变是至关重要的空间运动和主机纳米结构的几何形状的不规则性敏感。由此产生的自旋翻转拉比频率有一个不寻常的依赖场的振幅,演示方法的混乱自旋运动。反过来,由于电子速度中的自旋依赖项,轨道动力学强烈依赖于自旋演化。

英文摘要:

The coupled nonlinear coordinate and spin dynamics of an electron in a double quantum dot with spin-orbit interaction is studied semiclassically. The system is driven by an electric field with the frequency matching the orbital or the Zeeman resonance in magnetic field. Calculated evolution of the spin state is crucially sensitive to the irregularities in the spatial motion and the geometry of the host nanostructure. The resulting spin-flip Rabi frequency has an unusual dependence on the field amplitude, demonstrating approach to the chaotic spin motion. In turn, the orbital dynamics depends strongly on the spin evolution due to the spin-dependent term in the electron velocity.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑