4.8 Article

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

Journal

PHYSICAL REVIEW LETTERS
Volume 105, Issue 26, Pages -

Publisher

AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.105.266601

Keywords

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Funding

  1. MICINN (Spain) [FIS2008-00124, CSD2007-00010]
  2. Comunidad de Madrid, through NANOBIOMAG
  3. FOM (The Netherlands)
  4. EPSRC (UK)
  5. Korber Foundation
  6. Office of Naval Research
  7. Air Force Office of Scientific Research
  8. Royal Society
  9. EPSRC [EP/G035954/1] Funding Source: UKRI
  10. Engineering and Physical Sciences Research Council [EP/G035954/1] Funding Source: researchfish

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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 greater than or similar to 10 K, and the resistivity increases quadratically with T. Flexural phonons limit the intrinsic mobility down to a few m(2)/Vs at room T. Their effect can be eliminated by applying strain or placing graphene on a substrate.

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