AI 中文总结
本文研究交替磁性材料CrSb的反常霍尔效应，通过第一性原理计算结合瓦尼尔态模拟外场影响，发现其反常霍尔电导率与磁化强度无线性关系，为该类材料的应用提供理论依据。
AI 中文摘要
交替磁性领域的最新发展以及对反常霍尔效应应用需求的增加，为材料中新型量子相的研究开启了新时代。此前被认为科学上可预测的量子材料展现出新颖特性，使其成为研究焦点。这些现象促使我们结合物质的拓扑非平庸相，重新思考对现有磁性材料分类以及反常霍尔效应的已有认知。近期的一个相关进展是具有量子计算应用前景的新型交替磁性材料。本文中，我们详细阐述了有前景的交替磁性化合物CrSb中自旋与轨道分辨的电子谱、模式分解的声子色散关系、几何贝里曲率以及拓扑表面态，及其对反常霍尔电导率的影响。我们还利用第一性原理计算，结合该交替磁体多种磁性构型的计算高效最大化定域瓦尼尔态，模拟外场的影响，阐明了反常霍尔电导率与磁化强度的线性关系并非对所有磁性类别都成立，例如交替磁体就不满足该关系。
英文摘要
Recent development in the field of altermagnetism, and increased demand for the search of applications of anomalous hall effect have ushered in a new era for novel quantum phases in materials. Quantum materials previously anticipated to be scientifically predictable have unfolded novel properties that brought them into the spotlight. These manifestations have led us to rethink our understanding of existing classification of magnetic materials and preexisting notions about anomalous hall effect in the light of topologically nontrivial phases of matter. One such recent de- velopment lies in the novel class of alter-magnetic materials with prospect for quantum computing. In this article, we delineate the spin and orbital resolved electronic spectrum, mode-decomposed phonon dispersion relations, geometrical berry curvature and topological surface states and their implications on anomalous Hall conductivity in the promising altermagnetic compound CrSb. We further utilize first principles calculations coupled with computationally efficient maximally localized wannier states of numerous magnetic configurations of the altermagnet to simulate the effect of external fields and elucidate the fact that the linear behaviour of anomalous hall conductivity with magnetization does not necessarily hold true for all magnetic classes, such as altermagnets.
Comments10 pages, 8 figures
