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arXiv 2301.04898cond-mat.mtrl-sci
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范德华磁性材料电子能带重构的光学指纹

Optical fingerprints of the electronic band reconstruction in van der Waals magnetic materials

M. Corasaniti, R. Yang, Y. Liu, C. Petrovic, L. Degiorgi

摘要:

我们报告了在范德华(vdW)磁性材料2 $M_x$ TaS $_2$($M$ = Mn和Co)的电荷动力学的宽带研究,这跨越了远程反铁磁(AFM)和铁磁(FM)秩序的开始,这取决于嵌入$M$和它的浓度$x$。我们发现了一个光谱权重($SW$)移动从高到低的能量尺度FM组合物,而从低到高的AFM化合物的光谱能量去除了重$SW$。这映射了沿着从FM到AFM阶的交叉的电子能带结构的相关重建,这恢复了插入的3个$d$元素的自旋多数带和少数带之间的状态密度的占据平衡。

英文摘要:

We report a broadband study of the charge dynamics in the van der Waals (vdW) magnetic materials 2H-$M_x$TaS$_2$ ($M$ = Mn and Co), which span the onset of both long-range antiferromagnetic (AFM) and ferromagnetic (FM) order, depending on the intercalation $M$ and its concentration $x$. We discover a spectral weight ($SW$) shift from high to low energy scales for FM compositions, while reversely $SW$ is removed from low towards high spectral energies for AFM compounds. This maps the related reconstruction of the electronic band structure along the crossover from the FM to AFM order, which restores an occupation balance in the density of states between spin majority and minority bands of the intercalated 3$d$ elements.

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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