Negative differential thermal resistance induced by ballistic transport

Abstract

Using nonequilibrium molecular-dynamics simulations, we study the temperature dependence of the negative differential thermal resistance that appears in two-segment Frenkel-Kontorova lattices. We apply the theoretical method based on Landauer equation to obtain the relationship between the heat current and the temperature, which states a fundamental interpretation about the underlying physical mechanism of the negative differential thermal resistance. The temperature profiles and transport coefficients are demonstrated to explain the crossover from diffusive to ballistic transport. The finite-size effect is also discussed.

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• Thermal rectification and negative differential thermal conductance in harmonic chains with nonlinear system-bath coupling
• Dimension dependence of negative differential thermal resistance in graphene nanoribbons
• Anomalous negative differential thermal resistance in a momentum-conserving lattice
• Different thermal conductance of the inter- and intra-chain interactions in a double-stranded molecular structure
• T-Shape Molecular Heat Pump
• Existence of negative differential thermal conductance in one-dimensional diffusive thermal transport
• Thermal Rectification and Negative Differential Thermal Resistance in a driven two segment classical Heisenberg chain
• Thermally driven classical Heisenberg chain with a spatially varying magnetic field: Thermal rectification and Negative differential thermal resistance
• Ballistic Thermal Transistor of Dielectric Four-terminal Nanostructures
• Quantum vs Classical Thermal Transport at Low Temperatures
• Radial thermal rectification in the concentric silicon ring from ballistic to diffusive regime