论文标题
量子厅制度中条纹和气泡的微观细节
Microscopic details of stripes and bubbles in the quantum Hall regime
论文作者
论文摘要
我们使用完全自以为是的横向分辨的Hartree折叠近似值来以近宏观样本量的量子厅制度中较高的Landau水平的电子配置来解决电子构型。我们的结果给出了带状和气泡的电荷密度调制的微观细节，并根据填充因子显示了它们如何出现。我们发现，在条纹和气泡的边界处存在一个区域，并具有密度调制，该区域对应于填充因子一半填充。这些边界区域的微观细节确定了将电荷密度调制对齐的几何边界条件，即条纹或气泡。使用非平衡网络模型对传输进行建模，从而在接近一半填充的条纹状态下的注入电流方向上有明显的各向异性。我们获得的条纹周期为2.9 Cyclotron Radii。我们的结果表明，许多粒子物理在整数量子厅制度中的主导地位，并对其在强磁场中的后果提供了直观的理解。
We use a fully self-consistent laterally resolved Hartree-Fock approximation for numerically addressing the electron configurations at higher Landau levels in the quantum Hall regime for near-macroscopic sample sizes. Our results give microscopic details of stripe- and bubble-like charge density modulations and show how these emerge depending on the filling factor. We find that there exists a region at the boundaries of the stripes and bubbles with a density modulation that corresponds to a filling factor around half filling. The microscopic details of these boundary regions determine the geometrical boundary conditions for aligning the charge density modulation either as stripes or bubbles. Transport is modelled using a non-equilibrium network model giving a pronounced anisotropy in direction of the injected current in the stripe regime close to half filling. We obtain a stripe period of 2.9 cyclotron radii. Our results indicate the dominance of many particle physics in the integer quantum Hall regime and provide an intuitive understanding of its consequences in strong magnetic fields.
