Dirac Points, Spinons, and Spin Liquid in Twisted Bilayer Graphene

被引：29
|
作者：
Irkhin, V. Yu. [1 ]
Skryabin, Yu. N. [1 ]
机构：
[1] Russian Acad Sci, Mikheev Inst Met Phys, Ekaterinburg 620108, Russia
来源：
JETP LETTERS | 2018年 / 107卷 / 10期
基金：
俄罗斯基础研究基金会;
关键词：
TRANSITIONS; INSULATOR;
D O I：
10.1134/S0021364018100016
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
Twisted bilayer graphene is an excellent example of highly correlated system demonstrating a nearly flat electron band, the Mott transition and probably a spin liquid state. Besides the one-electron picture, analysis of Dirac points is performed in terms of spinon Fermi surface in the limit of strong correlations. Application of gauge field theory to describe deconfined spin liquid phase is treated. Topological quantum transitions, including those from small to large Fermi surface in the presence of van Hove singularities, are discussed.
引用
收藏
页码：651 / 654
页数：4
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