Electrostatic interactions in twisted bilayer graphene

• 作者: Tommaso Cea Pierre A.Pantaleón Niels R.Walet Francisco Guinea
• 来源期刊: 纳米材料科学（英文版）
• 年，卷（期）: 2022,（1）
• 页码范围: 27-35
• 页数: 9页
• 语种: 中文

摘要

The effects of the long range electrostatic interaction in twisted bilayer graphene are described using the Hartree-Fock approximation.The results show a significant dependence of the band widths and shapes on electron filling,and the existence of broken symmetry phases at many densities,either valley/spin polarized,with broken sub-lattice symmetry,or both.