screening
screening，kohnanomaly，friedeloscillation，andrkkyinteractioninbilayergraphene-外文文献(编辑修改稿)
0skC0C0sk0C211C0cos2C182: (10)C5intra(C5inter) indicates the polarization due to intraband(interband) transition. After angular integration over thedirection of q, we haveC5intra240。 q222。 188。