Renormalization and cyclotron resonance in bilayer graphene with weak electron-hole asymmetry
Renormalization and cyclotron resonance in bilayer graphene with weak electron-hole asymmetry
复制标题
弱电子空穴不对称双层石墨烯的重正化和回旋共振
DOI：
10.1103/physrevb.84.075409
复制
发表时间：
2011
期刊：
影响因子：
--
通讯作者：
K. Shizuya
中科院分区：
文献类型：
--
作者：
T.Myo;A.Umeya;H.Toki;K.Ikeda;K. Shizuya
考虑到实验表明的弱电子-空穴不对称性，重点研究了逃避Kohn定理的多体修正，研究了双层石墨烯中的回旋共振。直接计算表明，在存在电子-空穴不对称参数的情况下，该理论仍然是可重整化的，并给出了在磁场下石墨烯进行重整化的一般程序。电子-空穴不对称性在一定程度上提高了理论与现有数据的拟合性，并且数据似乎表明了重整化速度因子随磁场的运行，这是重整化的一个关键结果。
Cyclotron resonance in bilayer graphene is studied with weak electron-hole asymmetry suggested by experiment taken into account and with the focus on many-body corrections that evade Kohn’s theorem. It is shown by direct calculation that the theory remains renormalizable toin the presence of electron-hole asymmetry parameters, and a general program to carry out renormalization for graphene under a magnetic field is presented. Inclusion of electron-hole asymmetry in part improves the theoretical fit to the existing data, and the data appear to indicate the running of the renormalized velocity factor with the magnetic field, which is a key consequence of renormalization.