论文标题
Fermi表面和WTE2中的嵌套磁故障
Fermi surface and nested magnetic breakdown in WTe2
论文作者
论文摘要
我们报告了一项详细的Shubnikov-de Haas（SDH）研究，对磁场中的Weyl型II半含量WTE2的研究最多为29 t。通过使用SDH结果指导我们的密度功能理论计算，我们能够通过在该属性中精确地确定其FERMI表面的精确确定其FERMI表面，从而在大量的属性中使用该属性，从而在大量的电子中进行了这些属性。除了基本的轨道外，我们还观察到磁故障，可以在俄罗斯 - 裸露的电子和孔口袋的费米表面的模型中始终如一地解释。 WTE2中磁故障的开始仅通过杂质阻尼与其他金属系统中的磁故障情况相反。
We report a detailed Shubnikov-de Haas (SdH) study on the Weyl type-II semimetal WTe2 in magnetic fields up to 29 T. By using the SdH results to guide our density functional theory calculations, we are able to accurately determine its Fermi surface by employing a moderate Hubbard U term, which is an essential step in explaining the unusual electronic properties of this much studied material. In addition to the fundamental orbits, we observe magnetic breakdown, which can consistently be explained within the model of a Russian-doll-nested Fermi surface of electron and hole pockets. The onset of magnetic breakdown in WTe2 is solely determined by impurity damping in contrast to magnetic breakdown scenarios in other metallic systems.
