Nature Communications ( IF 14.7 ) Pub Date : 2022-10-19 , DOI: 10.1038/s41467-022-33705-y Zhaowei Zhang 1 , Naizhou Wang 1 , Ning Cao 2 , Aifeng Wang 2 , Xiaoyuan Zhou 2 , Kenji Watanabe 3 , Takashi Taniguchi 4 , Binghai Yan 5 , Wei-Bo Gao 1, 6, 7, 8
Symmetries, quantum geometries and electronic correlations are among the most important ingredients of condensed matters, and lead to nontrivial phenomena in experiments, for example, non-reciprocal charge transport. Of particular interest is whether the non-reciprocal transport can be manipulated. Here, we report the controllable large non-reciprocal charge transport in the intrinsic magnetic topological insulator MnBi2Te4. The current direction relevant resistance is observed at chiral edges, which is magnetically switchable, edge position sensitive and stacking sequence controllable. Applying gate voltage can also effectively manipulate the non-reciprocal response. The observation and manipulation of non-reciprocal charge transport reveals the fundamental role of chirality in charge transport of MnBi2Te4, and pave ways to develop van der Waals spintronic devices by chirality engineering.
中文翻译:
内在磁性拓扑绝缘体 MnBi2Te4 中可控的大非互易电荷传输
对称性、量子几何和电子相关性是凝聚态物质最重要的成分之一,并导致实验中的非平凡现象,例如非互易电荷传输。特别感兴趣的是是否可以操纵非互易传输。在这里,我们报告了本征磁性拓扑绝缘体 MnBi 2 Te 4中可控的大非互易电荷传输. 在手征边缘观察到与电流方向相关的电阻,这是可磁性切换的,边缘位置敏感且堆叠顺序可控。施加栅极电压还可以有效地控制非互易响应。对非互易电荷传输的观察和操纵揭示了手性在 MnBi 2 Te 4电荷传输中的基本作用,并为通过手性工程开发范德华自旋电子器件铺平了道路。