Potential fluctuations in graphene due to correlated charged impurities in substrate

Autor:	Anicic, Rastko, Miskovic, Zoran
Rok vydání:	2013
Předmět:	Condensed Matter - Materials Science Condensed Matter - Statistical Mechanics
Zdroj:	Appl. Phys. Lett. 103, 171606 (2013)
Druh dokumentu:	Working Paper
DOI:	10.1063/1.4826946
Popis:	We evaluate the autocorrelation function of the electrostatic potential in doped graphene due to nearby charged impurities. The screening of those impurities is described by a combination of the polarization function for graphene in random phase approximation with the electrostatic Green's function of the surrounding dielectrics. Using the hard-disk model for a two-dimensional distribution of impurities, we show that large correlation lengths between impurities can give rise to anti-correlation in the electrostatic potential, in agreement with recent experiments. Comment: To be published in to Applied Physics Letters
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1310.4881 Zobrazit plný text záznamu View this record from Arxiv