Zhou, H., Zhang, G., Wang, J.-S., & Zhang, Y.-W. (2023). Anharmonic quantum thermal transport across a van der Waals interface. MRS Bulletin. https://doi.org/10.1557/s43577-022-00456-6
Abstract:
We investigate the anharmonic phonon scattering across a weakly interacting interface by developing
a quantum mechanics-based theory. We nd that the contribution from anharmonic threephonon
scatterings to interfacial thermal conductance can be cast into Landauer formula with
transmission function being temperature-dependent. Surprisingly, in the weak coupling limit, the
transmission due to anharmonic phonon scattering is unbounded with increasing temperature, which
is physically impossible for two-phonon processes. We further reveal that the anharmonic contribution
in a real heterogeneous interface (e.g., between graphene and monolayer molybdenum disul de)
can dominate over the harmonic process even at room temperature, highlighting the important role
of anharmonicity in weakly interacting heterogeneous systems.
License type:
Publisher Copyright
Funding Info:
This research / project is supported by the National Research Foundation - Competitive Research Program
Grant Reference no. : NRF-CRP24- 2020-0002
This research / project is supported by the A*STAR - SERC Central Research Fund
Grant Reference no. : N.A
Description:
The version of the article has been accepted for publication, after peer review and is subject to Springer Nature’s AM terms of use, but is not the Version of Record and does not reflect post-acceptance improvements, or any corrections. The Version of Record is available online at: http://dx.doi.org/10.1557/s43577-022-00456-6