Journal
PHYSICAL REVIEW B
Volume 83, Issue 16, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.83.161402
Keywords
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Funding
- DARPA/HRL CERA
- ARL
- SRC/FCRP FENA
- Office of Basic Energy Sciences, US DOE at Oak Ridge National Lab [DE-AC05-00OR22725]
- UT-Battelle, LLC.
- NSF
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Using calculations from first principles, we demonstrate that intrinsic carrier-phonon scattering in bilayer graphene is dominated by low-energy acoustic (and acousticlike) phonon modes in a framework that bears more resemblance to bulk graphite than to monolayer graphene. The total scattering rate at low to moderate electron energies can be described by a simple two-phonon model in the deformation potential approximation with effective constants D-ac approximate to 15 eV and D-op approximate to 2.8 x 10(8) eV/cm for acoustic and optical phonons, respectively. With much enhanced acoustic phonon scattering, the mobility of intrinsic bilayer graphene is estimated to be significantly smaller than that of the monolayer.
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