Frequency shift of optical phonons in doped graphene layers

Srijan Kumar Saha, U. V. Waghmare, H. R. Krishnamurthy +1

We use first-principles density-functional calculations to determine the frequency shift of the A${}_1^{\prime }$-$\mathbf{K}$ phonon (Raman D band) in monolayer graphene, as a function of the c…