Analytical expression for the RKKY interaction in doped graphene
Analytical expression for the RKKY interaction in doped graphene
We obtain an analytical expression for the Ruderman-Kittel-Kasuya-Yosida interaction $J$ in elctron- or hole-doped graphene for linear Dirac bands. The results agree very well with the numerical calculations for the full tight-binding band structure in the regime where the linear band structure is valid. The analytical result, expressed in terms …