Limits on Charge Carrier Mobility in Suspended Graphene due to Flexural Phonons

2010/08/15 by Eduardo V. Castro, E. V. Castro, H. Ochoa +10 · 386 citations
Engineering · Materials Science · Physics and Astronomy · #Advanced Memory and Neural Computing #Carbon Nanotubes in Composites #Charge (physics) #Charge carrier #Composite material #Condensed matter physics #Electron mobility #Flexural strength #Graphene #Graphene research and applications #Materials science #Nanotechnology #Phonon #Phonon scattering #Physics #Quantum mechanics #Scattering #Substrate (aquarium) #cond-mat.mtrl-sci #cond-mat.soft

paper · pdf · doi:10.1103/physrevlett.105.266601

published in Physical Review Letters 105(26), 266601 (American Physical Society) · 4 pages, 3 figures

arxiv created 2010/08/15 · openalex publication_date 2010/12/22 · arxiv updated 2011/02/08 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

The temperature dependence of the mobility in suspended graphene samples is investigated. In clean samples, flexural phonons become the leading scattering mechanism at temperature T\ensuremath\gtrsim10 K, and the resistivity increases quadratically with T. Flexural phonons limit the intrinsic mobility down to a few m²/V s at room T. Their effect can be eliminated by applying strain or placing graphene on a substrate.

Citations

• Solitons in conducting polymers
• Ultrahigh electron mobility in suspended graphene
• Measurement of the Elastic Properties and Intrinsic Strength of Monolayer Graphene
• Transport and Elastic Scattering Times as Probes of the Nature of Impurity Scattering in Single-Layer and Bilayer Graphene
• The electronic properties of graphene
• Intrinsic and extrinsic performance limits of graphene devices on SiO2
• Electron scattering on microscopic corrugations in graphene

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• Wiedemann–Franz Relation and Thermal-Transistor Effect in Suspended Graphene