Effect of Coulomb interactions on the optical properties of doped graphene

Autor:	Grushin, Adolfo G., Valenzuela, Belen, Vozmediano, Maria A. H.
Rok vydání:	2009
Předmět:	Condensed Matter - Materials Science
Zdroj:	Phys. Rev. B 80,155417 (2009)
Druh dokumentu:	Working Paper
DOI:	10.1103/PhysRevB.80.155417
Popis:	Recent optical conductivity experiments of doped graphene in the infrared regime reveal a strong background in the energy region between the intra and interband transitions difficult to explain within conventional pictures. We propose a phenomenological model taking into account the marginal Fermi liquid nature of the quasiparticles in graphene near the neutrality point that can explain qualitatively the observed features. We also study the electronic Raman signal and suggest that it will also be anomalous. Comment: 4 pages, 2 figures
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/0907.0118 Zobrazit plný text záznamu View this record from Arxiv