Edge Magneto-Fingerprints in Disordered Graphene Nanoribbons
Jean-Marie Poumirol, Alessandro Cresti, Stephan Roche, Walter, Escoffier, Michel Goiran, Xinran Wang, Xiaolin Li, Hongjie Dai, Bertrand, Raquet
TL;DR
This paper investigates magneto-transport in disordered graphene nanoribbons under high magnetic fields, revealing edge-dependent electronic confinement and suppressed backscattering, supported by quantum simulations of disorder effects.
Contribution
It provides new insights into edge magneto-fingerprints and the impact of disorder in graphene nanoribbons under high magnetic fields.
Findings
Field-dependent electronic confinement features identified.
Large positive magnetoconductance observed.
Quantum simulations support disorder-related suppression of backscattering.
Abstract
We report on (magneto)-transport experiments in chemically derived narrow graphene nanoribbons under high magnetic fields (up to 60 Tesla). Evidences of field-dependent electronic confinement features are given, and allow estimating the possible ribbon edge symmetry. Besides, the measured large positive magnetoconductance indicates a strong suppression of backscattering induced by the magnetic field. Such scenario is supported by quantum simulations which consider different types of underlying disorders (smooth edge disorder and long range Coulomb scatters).
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