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de Haas-van Alphen effect of correlated Dirac states in kagome metal Fe3Sn2.
Nature Communications ( IF 14.7 ) Pub Date : 2019-10-25 , DOI: 10.1038/s41467-019-12822-1 Linda Ye 1 , Mun K Chan 2 , Ross D McDonald 2 , David Graf 3 , Mingu Kang 1 , Junwei Liu 4 , Takehito Suzuki 1 , Riccardo Comin 1 , Liang Fu 1 , Joseph G Checkelsky 1
Nature Communications ( IF 14.7 ) Pub Date : 2019-10-25 , DOI: 10.1038/s41467-019-12822-1 Linda Ye 1 , Mun K Chan 2 , Ross D McDonald 2 , David Graf 3 , Mingu Kang 1 , Junwei Liu 4 , Takehito Suzuki 1 , Riccardo Comin 1 , Liang Fu 1 , Joseph G Checkelsky 1
Affiliation
Primarily considered a medium of geometric frustration, there has been a growing recognition of the kagome network as a harbor of lattice-borne topological electronic phases. In this study we report the observation of magnetoquantum de Haas-van Alphen oscillations of the ferromagnetic kagome lattice metal Fe3Sn2. We observe a pair of quasi-two-dimensional Fermi surfaces arising from bulk massive Dirac states and show that these band areas and effective masses are systematically modulated by the rotation of the ferromagnetic moment. Combined with measurements of Berry curvature induced Hall conductivity, our observations suggest that the ferromagnetic Dirac fermions in Fe3Sn2 are subject to intrinsic spin-orbit coupling in the d electron sector which is likely of Kane-Mele type. Our results provide insights for spintronic manipulation of magnetic topological electronic states and pathways to realizing further highly correlated topological materials from the lattice perspective.
中文翻译:
Kagome 金属 Fe3Sn2 中相关狄拉克态的哈斯-范阿尔芬效应。
戈薇网络主要被认为是一种几何挫折的媒介,但人们越来越认识到戈薇网络是晶格拓扑电子相的港口。在这项研究中,我们报告了铁磁 kagome 晶格金属 Fe3Sn2 的磁量子 de Haas-van Alphen 振荡的观察。我们观察到由大块狄拉克态产生的一对准二维费米面,并表明这些带面积和有效质量通过铁磁矩的旋转进行系统调制。结合贝里曲率诱导霍尔电导率的测量,我们的观察结果表明,Fe3Sn2 中的铁磁狄拉克费米子在 d 电子扇区中受到本征自旋轨道耦合的影响,这可能是凯恩-梅勒类型。我们的结果为磁拓扑电子态的自旋电子操纵提供了见解,并为从晶格角度实现进一步高度相关的拓扑材料提供了途径。
更新日期:2019-10-25
中文翻译:
Kagome 金属 Fe3Sn2 中相关狄拉克态的哈斯-范阿尔芬效应。
戈薇网络主要被认为是一种几何挫折的媒介,但人们越来越认识到戈薇网络是晶格拓扑电子相的港口。在这项研究中,我们报告了铁磁 kagome 晶格金属 Fe3Sn2 的磁量子 de Haas-van Alphen 振荡的观察。我们观察到由大块狄拉克态产生的一对准二维费米面,并表明这些带面积和有效质量通过铁磁矩的旋转进行系统调制。结合贝里曲率诱导霍尔电导率的测量,我们的观察结果表明,Fe3Sn2 中的铁磁狄拉克费米子在 d 电子扇区中受到本征自旋轨道耦合的影响,这可能是凯恩-梅勒类型。我们的结果为磁拓扑电子态的自旋电子操纵提供了见解,并为从晶格角度实现进一步高度相关的拓扑材料提供了途径。