层状5d过渡金属碲化物调制结构解析与物性研究

过渡族金属二硫属化合物是研究最为广泛的类石墨烯材料，5d过渡金属具备较大的实空间半径，电子自旋与轨道作用较强，与硫属元素结合形成的化合物将具有强电子-轨道耦合作用，因而容易具有奇异的物理性能。当前层状5d过渡金属碲化物尚未引起较大关注，特别是不少具有复杂调制晶体结构，使得相关研究难以进一步开展。本项目从晶体结构解析出发，拟系统开展针对层状5d过渡金属碲化物的调制结构解析工作，并进一步研究相应的本征物理性质，如输运、比热、磁学等特性，最终获得层状5d过渡金属碲化物的精细晶体结构、物理性能与能带结构的关系，推动过渡族金属二硫属化合物以及二维材料研究领域的发展。

Transition metal dichalcogenides, as graphene-like materials, have attracted extensive interest. For 5d transition metals, they generally have large real space radii, strong electron spin, and orbital interactions. By combining with chalcogen elements, the formed compounds have strong electrons coupling effect, which tends to have unconventional physical properties. At present, not enough attention has been paid to the layered 5d transition metal ditellurides, especially many of them have complex modulated crystal structures, which hinders further research. Based on the crystal structure, this project intends to refine the modulated structures of the 5d transition metal ditellurides, and further study the basic physical properties, such as transport properties, specific heat, and magnetic properties. The relationship between the modulated structure, physical properties and band structures of 5d transition metal ditellurides will promote the research of transition metal dichalcogenides as well as two-dimensional materials.