AI 中文总结
研究时间反演对称性破缺的三维外尔半金属中无序诱导对轨道霍尔电导率的贡献，用量子动力学方法分析侧跳和倾斜散射影响，展示其对无序势和费米能的依赖性，证明高阶无序贡献主导，还给出增强电导率的方法及潜在实验意义。
AI 中文摘要
我们的研究提供了时间反演对称性破缺的三维外尔半金属中无序诱导对轨道霍尔电导率的贡献。使用量子动力学方法，我们分析了侧跳和倾斜散射对系统的影响。明确展示了轨道霍尔电导率对无序势和费米能的依赖性。此外，我们证明在时间反演对称性破缺的外尔半金属中，高阶无序贡献，特别是来自无序势三次方的贡献，在振荡电场下主导轨道霍尔电导率，抑制了包括侧跳贡献在内的其他散射机制。我们可以通过调整无序势强度、外加能量以及选择具有合适外尔节点间距的系统来增强外在轨道霍尔电导率。最后，我们的结果得到数值估计的支持，并突出了对推进轨道电子学器件技术的潜在实验相关性。
英文摘要
Our study provides the disorder-induced contribution to the orbital Hall conductivity in three-dimensional Weyl semimetals with broken time-reversal symmetry. Using the quantum kinetic approach, we analyse the impact of side-jump and skew scattering contributions to the system. The dependence of the orbital Hall conductivity on both disorder potential and the Fermi energy is explicitly demonstrated. Furthermore, we demonstrate that the higher-order disorder contribution, especially from the third power of disorder potential, dominates the orbital Hall conductivity under an oscillating electric field in a time-reversal symmetry broken Weyl semimetal, suppressing other scattering mechanisms, including the side jump contributions. We can enhance the extrinsic orbital Hall conductivity by tuning the strength of the disorder potential, applied energy, and choosing the system with appropriate Weyl node separation. Finally, our results are supported by numerical estimations and highlight potential experimental relevance for advancing orbitronics device technologies.
Comments11 pages, 3 figures
