Quantum interference in bilayer graphene

Autor:	Gorbachev, R. V., Tikhonenko, F. V., Mayorov, A. S., Horsell, D. W., Savchenko, A. K.
Rok vydání:	2007
Předmět:	Condensed Matter - Mesoscale and Nanoscale Physics Condensed Matter - Materials Science
Druh dokumentu:	Working Paper
Popis:	We report the first experimental study of the quantum interference correction to the conductivity of bilayer graphene. Low-field, positive magnetoconductivity due to the weak localisation effect is investigated at different carrier densities, including those around the electroneutrality region. Unlike conventional 2D systems, weak localisation in bilayer graphene is affected by elastic scattering processes such as intervalley scattering. Analysis of the dephasing determined from the magnetoconductivity is complemented by a study of the field- and density-dependent fluctuations of the conductance. Good agreement in the value of the coherence length is found between these two studies. Comment: Submitted to Physica E, Proceedings of EP2DS-17 (Genova, 2007)
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/0708.1700 Zobrazit plný text záznamu View this record from Arxiv