论文标题
弱场大厅的电阻率和旋转/山谷风味对称性破坏魔法扭曲的双层石墨烯
Weak-field Hall Resistivity and Spin/Valley Flavor Symmetry Breaking in Magic-Angle Twisted Bilayer Graphene
论文作者
论文摘要
接近魔术的角度，双层石墨烯Moiré超级晶格的最低能量传导和价带变得非常狭窄。仍然存在的带状分散剂对Moiré的应变模式，层之间的非局部隧道以及填充因子依赖的Hartree和交换带重态度的敏感。在本文中，我们分析了这些频段结构细节对在这个狭窄的频带系统中观察到的风味对称性对称模式的影响，以及对弱田hall和Schubnikov-de Haas Magneto磁力转运测量结果所揭示的费米表面重建的相关模式。
Near a magic twist angle, the lowest energy conduction and valence bands of bilayer graphene moiré superlattices become extremely narrow. The band dispersion that remains is sensitive to the moiré's strain pattern, nonlocal tunneling between layers, and filling-factor dependent Hartree and exchange band renormalizations. In this article we analyze the influence of these band-structure details on the pattern of flavor-symmetry-breaking observed in this narrow band system, and on the associated pattern of Fermi surface reconstructions revealed by weak-field-Hall and Schubnikov-de Haas magneto-transport measurements.
