论文标题
考虑伪造的库酸酯超导体中量子振荡的计算
Calculations of quantum oscillations in cuprate superconductors considering the pseudogap
论文作者
论文摘要
过度库酸酯超导体中量子振荡的观察结果与圆柱费米表面中包含的电荷密度一致，但轻度掺杂的化合物的频率比预期的要小得多。这归因于拓扑过渡到与存在的电荷密度波相关的费米表面的小口袋。另一方面，光谱测量结果表明，较大的二维费米表面不断变为四个断开的弧。在这里，我们考虑了pseudogap的效果，该假单限制了可用的$ k $空间区域，在该区域上开发了Landau级别，并获得了正确的载体密度。计算表明，断开的弧如何演变成封闭的费米表面，以核对实验。
The observations of quantum oscillations in overdoped cuprate superconductors were in agreement with a charge density contained in a cylindrical Fermi surface but the frequencies of lightly doped compounds were much smaller than expected. This was attributed to a topological transition into small pockets of Fermi surface associated with the existence of the charge density wave underlying superlattice. On the other hand, spectroscopic measurements suggested that the large two-dimensional Fermi surface changes continuously into a set of four disconnected arcs. Here we take into account the effect of the pseudogap that limits the available $k$-space area where the Landau levels are developed on the Luttinger theorem and obtain the correct carrier densities. The calculations show how the disconnected arcs evolve into a closed Fermi surface reconciling the experiments.
