Title

Correlated Random Hopping Disorder In Graphene At High Magnetic Fields: Landau Level Broadening And Localization Properties

Abstract

We study the density of states and localization properties of the lowest Landau levels of graphene at high magnetic fields. We focus on the effects caused by correlated long-range hopping disorder, which, in exfoliated graphene, is induced by static ripples. We find that the broadening of the lowest Landau level shrinks exponentially with increasing disorder correlation length. At the same time, the broadening grows linearly with magnetic field and with disorder amplitudes. The lowest Landau level peak shows a robust splitting, the origin of which we identify as the breaking of the sublattice (valley) degeneracy. © 2011 American Physical Society.

Publication Date

10-4-2011

Publication Title

Physical Review B - Condensed Matter and Materials Physics

Volume

84

Issue

16

Number of Pages

-

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.1103/PhysRevB.84.165406

Socpus ID

80455167934 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/80455167934

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