Many-body corrections to cyclotron resonance in graphene
Many-body corrections to cyclotron resonance in graphene
复制标题
石墨烯回旋共振的多体校正
DOI：
10.1088/1742-6596/334/1/012046
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发表时间：
2012
期刊：
影响因子：
--
通讯作者：
K. Shizuya
中科院分区：
文献类型：
--
作者：
P.Capel;堀内渋;鈴木宜之;D.Baye;松原隆彦;K. Shizuya
我们报道了我们最近对石墨烯回旋共振的研究，重点是多体效应对共振能量的影响。事实证明，真正的多体修正来自真空极化，尤其是石墨烯，它在短波长发散，需要速度的重整化，对于双层石墨烯，层间耦合也是如此。结果是，重整化速度和层间耦合强度随磁场变化，多体修正从一次共振到另一次共振是唯一确定的。对单层和双层石墨烯的理论和实验数据进行了比较。
We report our recent study of cyclotron resonance in graphene, with focus on the many-body effect on the resonance energies. The genuine many-body corrections turn out to derive from vacuum polarization, specific to graphene, which diverges at short wavelengths and which requires renormalization of velocity and, for bilayer graphene, interlayer coupling as well. As a result, the renormalized velocity and interlayer coupling strength run with the magnetic field, and many-body corrections are uniquely determined from one resonance to another. Theory is compared with the experimental data for both monolayer and bilayer graphene.