Near-field thermal transport between twisted bilayer graphene
arXiv:2103.00477 · doi:10.1103/PhysRevB.103.235415
Abstract
Active control of heat flow is of both fundamental and applied interest in thermal management and energy conversion. Here, we present a fluctuational electrodynamic study of thermal radiation between twisted bilayer graphene (TBLG), motivated by its unusual and highly tunable plasmonic properties. We show that near-field heat flow can vary by more than 10-fold over only a few degrees of twist, and identify special angles leading to heat flow extrema. These special angles are dictated by the Drude weight in the intraband optical conductivity of TBLG, and are roughly linear with the chemical potential. Further, we observe multiband thermal transport due to the increasing role of interband transitions as the twist angle decreases, in analogy to monolayer graphene in a magnetic field. Our findings are understood via the surface plasmons in TBLG, and highlight its potential for manipulating radiative heat flow.
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Cited by in corpus (5)
- The Effect of Non-Local Electrical Conductivity on Near-Field Radiative Heat Transfer between Graphene Sheets
- Controllable thermal radiation from twisted bilayer graphen
- Phonon heat conduction across slippery interfaces in twisted graphite
- Effect of out-of-plane acoustic phonons on the thermal transport properties of graphene
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