非均匀磁场中离轴电子涡旋的稳健性
Robustness of Off-Axis Electron Vortices in Nonuniform Magnetic Fields
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中文总结 AI 辅助
研究非均匀磁场中离轴电子涡旋的稳健性，通过识别SU(1,1)动力学不变量保证其固有轨道角动量守恒，经第一性原理模拟证实，建立了轴对称非均匀磁场中的稳健传输机制。
中文摘要 AI 辅助
旋转对称性保护轴上电子涡旋的拓扑电荷，但不保护离轴涡旋。我们识别出一个额外的SU(1,1)动力学不变量，它保证在近轴近似下其固有轨道角动量守恒。离轴电子涡旋穿过格拉泽透镜的第一性原理模拟证实了这一预测，在轴对称非均匀磁场中建立了稳健的传输机制。
英文摘要
Rotational symmetry protects the topological charge of on-axis electron vortices but not of off-axis vortices. We identify an additional SU(1,1) dynamical invariant that guarantees conservation of their intrinsic orbital angular momentum within the near-axis approximation. First-principles simulations of an off-axis electron vortex traversing a Glaser lens confirm this prediction, establishing a robust transport mechanism in axisymmetric nonuniform magnetic fields.
