论文标题
1t $^\ prime $ mote $ _ {2} $单晶：高压拉曼和结构研究
Anomalous compressibility in 1T$^\prime$ MoTe$_{2}$ single crystal:High pressure Raman and structural studies
论文作者
论文摘要
使用X射线衍射（XRD）和Raman Spectroscopy测量值对1T $^\ Prime Mote $ _ {2} $进行了详细的高压研究，最高为30.5 GPA。高压XRD测量值没有结构过渡。所有晶格参数在压力区域8.4至12.7 GPA中均显示出异常的变化。相对于8.4 GPa，样品的可压缩性被发现降低了几乎四倍以上12.7 GPa。在拉曼模式下的异常，对应于位于单位细胞表面中的Mo原子的脱离平面振动，这表明可能是由单位电池内部差分应变介导的强电子声子耦合。
A detailed high pressure study is carried out on 1T$^\prime$ MoTe$_{2}$ using X-ray diffraction(XRD) and Raman spectroscopy measurements upto about 30.5 GPa. High pressure XRD measurements show no structural transition. All the lattice parameters exhibit anomalous changes in the pressure region 8.4 to 12.7 GPa. Compressibility of the sample is found to be reduced by almost four times above 12.7 GPa with respect to that below 8.4 GPa. The anomalies in the Raman mode corresponding to the out of plane vibrations of Mo atoms sitting in the unit cell surface indicate a strong electron phonon coupling possibly mediated by differential strain inside the unit cell.
