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Transport signatures of pseudomagnetic Landau levels in strained graphene ribbons

Research output: Contribution to journalJournal article

Published

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Journal publication date24/06/2013
JournalPhysical Review Letters
Journal number26
Volume110
Number of pages5
Original languageEnglish

Abstract

In inhomogeneously strained graphene, low-energy electrons experience a valley-antisymmetric pseudomagnetic field which leads to the formation of localized states at the edge between the valence and conduction bands, understood in terms of peculiar n=0 pseudomagnetic Landau levels. Here we show that such states can manifest themselves as an isolated quadruplet of low-energy conductance resonances in a suspended stretched graphene ribbon, where clamping by the metallic contacts results in a strong inhomogeneity of strain near the ribbon ends.

Bibliographic note

© 2013 American Physical Society