论文标题
过渡金属二甲化合物中的室温多效性
Room temperature multiferroicity in a transition metal dichalcogenide
论文作者
论文摘要
多种铁秩序的共存，即多重性，是在材料中发现的稀缺性质。从历史上看，该状态主要是在三维复合氧化物中发现的，但是到目前为止，对于最广泛研究和特征的二维化合物（过渡金属二甲藻）的家族而言，该状态仍然难以捉摸。在这项研究中，我们报告了该材料家族中多效状态的实验实现，在室温下，散装WSE2的散装单晶。我们观察到铁磁和铁电的共存，在磁化和压电力显微镜滞后环存在下证明。这些发现为扩大和研究基于范德华的多功能设备的使用和研究开辟了可能性。
The coexistence of multiple ferroic orders, i.e. multiferroicity, is a scarce property to be found in materials. Historically, this state has been found mainly in 3-dimensional complex oxides, but so far this state has still been elusive for the most widely studied and characterized family of 2-dimensional compounds, the transition metal dichalcogenides. In this study we report the experimental realization of multiferroic states in this family of materials, at room temperature, in bulk single crystals of Te-doped WSe2. We observe the coexistence of ferromagnetism and ferroelectricity, evidenced in the presence of magnetization and piezoresponse force microscopy hysteresis loops. These findings open the possibility of widening the use and study of van der Waals-based multifunctional devices for new nanoelectronics and spintronics applications.
