First-principles method to study near-field radiative heat transfer

Abstract

We present a general and convenient first principle method to study near-field radiative heat transfer. We show that the Landauer-like expression of heat flux can be expressed in terms of a frequency and wave-vector dependent macroscopic dielectric function which can be obtained from the linear response density functional theory. A random phase approximation is used to calculate the response function. We computed the heat transfer in three systems -- graphene, molybdenum disulfide (MoS${}_2$), and hexagonal boron nitride (h-BN). Our results show that the near-field heat flux exceeds the blackbody limit up to four orders of magnitude. With the increase of the distances between two parallel sheets, a $1/d^2$ dependence of heat flux is shown, consistent with Coulomb's law. The heat transfer capacity is sensitive to the dielectric properties of materials. Influences from chemical potential and temperature are also discussed. Our method can be applied to a wide range of materials including systems with inhomogeneities.

arXiv comment7 pages, 6 figures

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Cited by in corpus (8)

• Dynamical Polarizability of Graphene with Spatial Dispersion
• Transport in electron-photon systems
• Performance improvement of three-body radiative diode driven by graphene surface plasmon polaritons
• Super-Planckian radiative heat transfer between coplanar two-dimensional metals
• Asymmetry-induced radiative heat transfer in Floquet systems
• Multiple magnetoplasmon polaritons of magneto-optical graphene in near-field radiative heat transfer
• Non-equilibrium Green's function formalism for radiative heat transfer
• Generalized first-principles method to study near-field heat transfer mediated by Coulomb interaction