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arXiv 2409.07993cond-mat.mes-hallcond-mat.mtrl-sci
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时间反演对称系统中无序对三阶反常霍尔效应的作用

Role of Disorder in Third-order Anomalous Hall Effect in Time-reversal Symmetric Systems

Chanchal K. Barman, Arghya Chattopadhyay, Surajit Sarkar, Jian-Xin Zhu, Snehasish Nandy

AI总结:

本文通过半经典玻尔兹曼框架和二维低能狄拉克模型,系统研究了无序散射对时间反演对称系统中三阶反常霍尔效应的影响,揭示偏斜散射和侧跳等外禀贡献及其对费米面各向异性的依赖关系。

摘要:

在狄拉克材料中,由贝里联络极化率驱动的三阶反常霍尔效应(TOAHE)为探索量子几何现象提供了一条有前景的途径。我们利用半经典玻尔兹曼框架研究杂质散射对TOAHE的作用,通过比较来自贝里联络极化率的内禀贡献与由无序引起的外禀贡献。为验证我们的理论发现,我们采用一个广义二维低能狄拉克模型来解析评估TOAHE的内禀和外禀贡献。我们的分析揭示了不同的无序介导效应,包括偏斜散射和侧跳贡献。我们还阐明了它们对费米面各向异性的有趣依赖关系,并讨论了实验探索的机会。

英文摘要:

The third-order anomalous Hall effect (TOAHE) driven by Berry connection polarizability in Dirac materials offers a promising avenue for exploring quantum geometric phenomena. We investigate the role of impurity scattering on TOAHE using the semiclassical Boltzmann framework, via a comparison of the intrinsic contributions (stemming from the Berry connection polarizability) with the extrinsic contributions caused by the disorder. To validate our theoretical findings, we employ a generalized two-dimensional low-energy Dirac model to analytically assess the intrinsic and extrinsic contributions to the TOAHE. Our analysis reveals distinct disorder-mediated effects, including skew-scattering and side-jump contributions. We also elucidate their intriguing dependencies on Fermi surface anisotropy and discuss opportunities for experimental exploration.

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。

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