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SM ISO690:2012 NIKA, Denis, POKATILOV, Evghenii, BALANDIN, Alexander A.. Theoretical description of thermal transport in graphene: The issues of phonon cut-off frequencies and polarization branches. In: Physica Status Solidi (B) Basic Research, 2011, vol. 248, pp. 2609-2614. ISSN 0370-1972. DOI: https://doi.org/10.1002/pssb.201100186 |
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Physica Status Solidi (B) Basic Research | ||||||
Volumul 248 / 2011 / ISSN 0370-1972 | ||||||
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DOI:https://doi.org/10.1002/pssb.201100186 | ||||||
Pag. 2609-2614 | ||||||
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Wediscuss theoretical approaches for description of the phonon thermal transport in graphene and identify open questions and problems. Specifically, we show that due to a fundamental ambiguity in the definition of the intrinsic thermal conductivity of two-dimensional (2-D) systems the calculations that use an arbitrary low-bound cut-off for the phonon frequency in the thermal conductivity integral lead to erroneous results. The problem of the relative contributions of the longitudinal acoustic (LA), transverse acoustic (TA), and out-of-plane phonon polarization branches to thermal transport in graphene is also discussed. Theoretical thermal conductivity data for graphene, obtained by different approaches, are compared with those for carbon nanotubes. |
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Cuvinte-cheie Longitudinal acoustic, Phonon frequencies, Phonon polarization, Phonon thermal transport, Relative contribution, theoretical approach, Thermal transport, Two-dimensional (2D) systems |
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