Abstract
The thermal conductivities of few-layer graphene per stratum are analytically calculated and compared with the single-layer value within the tight-binding Hamiltonian model and Green’s function formalism. The results show a decrease in the intra-plane thermal conductivity by increasing the number of layers. Moreover, the change in its magnitude varies less as the number of layers exceeds two.
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Appendices
Appendix 1
The EVs of the Hamiltonian Eq. 1 are given as follows:
For \(N_\mathrm{p}=2\), they are obtained as
for \(N_\mathrm{p}=3\), they are calculated as
while for \(N_\mathrm{p}=4\), we have
and for \(N_\mathrm{p}=5\), the EVs are as follows:
Appendix 2
\(\xi _{xx}({\mathcal {E}},\,T)\) for \(N_\mathrm{p}=2\) is determined by
for \(N_\mathrm{p}=3\), the result is
when \(N_\mathrm{p}=4\), it is found that
and \(N_\mathrm{p}=5\) leads to
where \(\sum ^{\prime }\) shows sum over just some bands but not all.
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Mousavi, H., Khodadadi, J. Tight-Binding Investigation of Thermal Conductivity of Graphene and Few-Layer Graphene Systems. Int J Thermophys 36, 2638–2646 (2015). https://doi.org/10.1007/s10765-015-1946-8
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DOI: https://doi.org/10.1007/s10765-015-1946-8