Transport and Elastic Scattering Times as Probes of the Nature of Impurity Scattering in Single-Layer and Bilayer Graphene

2009/03/31 by M. Monteverde, Claudia Ojeda‐Aristizabal, C. Ojeda-Aristizabal +14 · 6 citations
Chemistry · Materials Science · Physics and Astronomy · #Bilayer #Bilayer graphene #Carrier scattering #Chemistry #Condensed matter physics #Elastic scattering #Graphene #Graphene research and applications #Impurity #Materials science #Monolayer #Nanotechnology #Optics #Physics #Quantum and electron transport phenomena #Scattering #Thermal properties of materials #cond-mat.mes-hall

paper · pdf · doi:10.1103/physrevlett.104.126801

published as Rev. Lett. 104, 126801 (2010) Phys. Rev. Lett. 104, 126801 (2010)

openalex publication_date 2010/03/26 · arxiv created 2010/04/22 · arxiv updated 2015/05/13 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

Transport and elastic scattering times, tautr and taue, are experimentally determined from the carrier density dependence of the magnetoconductance of monolayer and bilayer graphene. Both times and their dependences on carrier density are found to be very different in the monolayer and the bilayer. However, their ratio tautr/taue is found to be close to 1.8 in the two systems and nearly independent of the carrier density. These measurements give insight on the nature (neutral or charged) and range of the scatterers. Comparison with theoretical predictions suggests that the main scattering mechanism in our samples is due to strong (resonant) scatterers of a range shorter than the Fermi wavelength, likely candidates being vacancies, voids, adatoms or short-range ripples.

Citations

• Density Inhomogeneity Driven Percolation Metal-Insulator Transition and Dimensional Crossover in Graphene Nanoribbons
• Quantum Hall Ferromagnetism in Graphene
• Resonant low-energy electron scattering on short-range impurities in graphene
• The electronic properties of graphene
• Graphene: New bridge between condensed matter physics and quantum electrodynamics

Cited by

• Modification of the scattering mechanisms in bilayer graphene in proximity to a molecular thin film probed in the mesoscopic regime
• Integrating functional oxides with graphene
• A corner reflector of graphene Dirac fermions as a phonon-scattering sensor
• Limits on Charge Carrier Mobility in Suspended Graphene due to Flexural Phonons
• Electronic properties of graphene-based bilayer systems
• Conductance Fluctuations and Field Asymmetry of Rectification in Graphene

Related

• Charged Impurity Scattering in Graphene
• A self-consistent theory for graphene transport
• Numbers of donors and acceptors from transport measurements in graphene
• Unified description of the dc conductivity of monolayer and bilayer graphene at finite densities based on resonant scatterers
• Scattering mechanisms and Boltzmann transport in graphene