Electronic thermal conductivity of suspended graphene

Journal Article · Thu Apr 24 00:00:00 EDT 2014 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.4872935· OSTI ID:22269594

Begum, K. Rizwana, E-mail: [e-mail]; Sankeshwar, N. S., E-mail: [e-mail] ^[1]

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1. Department of Physics, Karnatak University, Dharwad-580003, Karnataka (India)

Electronic thermal conductivity, κ{sub e}, of suspended graphene is studied for 20K<400K. Electrons are assumed to be scattered by impurities, surface roughness, vacancies, inelastic optical phonons and in-plane and flexural acoustic phonons. Numerical calculations of κ{sub e}, as a function of temperature, are presented. At lower temperatures, κ{sub e}, is found to be determined mainly by vacancy (T<50K) and impurity (T<150K) scatterings. Flexural phonons influence κ{sub e} for T > 100K, becoming dominant for T > 250K. Good agreement with recent experimental data is obtained.

• OSTI ID: 22269594
• Journal Information: AIP Conference Proceedings, Vol. 1591, Issue 1; Conference: 58. DAE solid state physics symposium 2013, Patiala, Punjab (India), 17-21 Dec 2013; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
77 NANOSCIENCE AND NANOTECHNOLOGY
GRAPHENE
IMPURITIES
PHONONS
SCATTERING
SURFACES
TEMPERATURE DEPENDENCE
THERMAL CONDUCTIVITY