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Pseudo-magnetic field distribution and pseudo-Landau levels in suspended graphene flakes

Research output: Contribution to journalJournal article

Published

Journal publication date08/2012
JournalSolid State Communications
Journal number15
Volume152
Number of pages4
Pages1442-1445
Original languageEnglish

Abstract

Combining the tight-binding approximation and linear elasticity theory for a planar membrane, we investigate stretching of a graphene flake assuming that two opposite edges of the sample are clamped by the contacts. We show that, depending on the aspect ratio of the flake and its orientation, gapped states may form in the membrane in the vicinity of the contacts. This gap in the pre-contact region should be the biggest for the armchair orientation of the flake and W/L less than or similar to 1.