We study the radiative heat transfer through a Su–Schrieffer–Heeger chain of plasmonic InSb nanoparticles in close vicinity of an InSb substrate. We show how the frequency bands of the in-plane and out-of-plane modes in the chain are deformed by the coupling to the surface waves in the InSb substrate by considering different carrier concentrations. By calculating the Zak phase we show that also in the presence of the substrate there is a topological phase transition and that topologically protected edge modes emerge for finite chains. Finally, we demonstrate the long-range heat transport along the chain due to the coupling to the surface waves of the sample accompanied by a non-monotonic distance dependence of this effect and we show imprints of the trivial and non-trivial phase in the photonic local density of states. We find an enhanced heat transfer in the topological non-trivial phase compared to the trivial phase due to the contribution of the edge modes. • Long-range radiative heat transfer in a plasmonic nanoparticle chain. • Coupling of band modes and topological edge to surface waves. • Enhanced heat flux by edge modes in topologically non-trivial phase. • Chain-surface distance dependence of coupling strength and heat flux. • Enhancement of local density of states by edge modes coupled to surface waves.
Naeimi et al. (Tue,) studied this question.