Conductance fluctuations in graphene subjected to short-range disorder

Bobo Liu; Richard Akis; David K. Ferry

doi:10.1116/1.4917496

Conductance fluctuations in graphene subjected to short-range disorder

Bobo Liu, Richard Akis, David K. Ferry

Research output: Contribution to journal › Article › peer-review

2 Scopus citations

Abstract

Conductance fluctuations in graphene nanoribbons with a disordered, short-range potential are numerically studied. The authors carry out Fermi energy sweeps at different magnetic fields and magnetic field sweeps at a fixed Fermi energy to examine whether universality and ergodicity hold in graphene. The authors find that there is no universality of the fluctuations. The amplitude of fluctuations has a dependence on disorder strength. Further, Fermi energy sweeps have stronger fluctuation amplitudes than magnetic field sweeps, demonstrating a lack of ergodicity. In addition, the magnetic field does not significantly affect the fluctuation amplitude of Fermi energy sweeps.

Original language	English (US)
Article number	04E101
Journal	Journal of Vacuum Science and Technology B: Nanotechnology and Microelectronics
Volume	33
Issue number	4
DOIs	https://doi.org/10.1116/1.4917496
State	Published - Jul 1 2015

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Instrumentation
Process Chemistry and Technology
Surfaces, Coatings and Films
Electrical and Electronic Engineering
Materials Chemistry

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10.1116/1.4917496

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abstract = "Conductance fluctuations in graphene nanoribbons with a disordered, short-range potential are numerically studied. The authors carry out Fermi energy sweeps at different magnetic fields and magnetic field sweeps at a fixed Fermi energy to examine whether universality and ergodicity hold in graphene. The authors find that there is no universality of the fluctuations. The amplitude of fluctuations has a dependence on disorder strength. Further, Fermi energy sweeps have stronger fluctuation amplitudes than magnetic field sweeps, demonstrating a lack of ergodicity. In addition, the magnetic field does not significantly affect the fluctuation amplitude of Fermi energy sweeps.",

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AU - Akis, Richard

AU - Ferry, David K.

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N2 - Conductance fluctuations in graphene nanoribbons with a disordered, short-range potential are numerically studied. The authors carry out Fermi energy sweeps at different magnetic fields and magnetic field sweeps at a fixed Fermi energy to examine whether universality and ergodicity hold in graphene. The authors find that there is no universality of the fluctuations. The amplitude of fluctuations has a dependence on disorder strength. Further, Fermi energy sweeps have stronger fluctuation amplitudes than magnetic field sweeps, demonstrating a lack of ergodicity. In addition, the magnetic field does not significantly affect the fluctuation amplitude of Fermi energy sweeps.

AB - Conductance fluctuations in graphene nanoribbons with a disordered, short-range potential are numerically studied. The authors carry out Fermi energy sweeps at different magnetic fields and magnetic field sweeps at a fixed Fermi energy to examine whether universality and ergodicity hold in graphene. The authors find that there is no universality of the fluctuations. The amplitude of fluctuations has a dependence on disorder strength. Further, Fermi energy sweeps have stronger fluctuation amplitudes than magnetic field sweeps, demonstrating a lack of ergodicity. In addition, the magnetic field does not significantly affect the fluctuation amplitude of Fermi energy sweeps.

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Conductance fluctuations in graphene subjected to short-range disorder

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