论文标题
单层液体中的电子孔液体过渡金属二甲藻元化杂质结构
Electron-Hole Liquid in Monolayer Transition Metal Dichalcogenide Heterostructures
论文作者
论文摘要
过渡金属二核苷层的单层膜（尤其是MOS2，Mose2，WS2和WSE2）可以被视为研究高温电子孔液体研究的理想系统。与散装半导体相比，电子和孔的准二维性质可确保它们更强的相互作用。单层异质结构中库仑相互作用的筛选显着降低，因为它取决于环境的介电（例如，真空和底物），它们比过渡金属二分法膜的特征低得多。过渡金属二分法中电荷载体能量光谱的多数结构可显着降低动能，从而导致电子孔液体的平衡密度和结合能的增加。确定电子孔液体及其平衡密度的结合能。结果表明，在电子孔液体的计算中应使用二维库仑电位。
Monolayer films of transition metal dichalcogenides (in particular, MoS2, MoSe2, WS2, and WSe2) can be considered as ideal systems for the studies of high-temperature electron-hole liquids. The quasi-two-dimensional nature of electrons and holes ensures their stronger interaction as compared to that in bulk semiconductors. The screening of the Coulomb interaction in monolayer heterostructures is significantly reduced, since it is determined by the permittivities of the environment (e.g., vacuum and substrate), which are much lower than those characteristic of the films of transition metal dichalcogenides. The multivalley structure of the energy spectrum of charge carriers in transition metal dichalcogenides significantly reduces the kinetic energy, resulting in the increase in the equilibrium density and binding energy of the electron-hole liquid. The binding energy of the electron-hole liquid and its equilibrium density are determined. It is shown that the two-dimensional Coulomb potential should be used in the calculations for the electron-hole liquid.
