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Updated: Jun 22, 2026

Characterization of Thermal Transport in One-dimensional Solid Materials
Published on: January 26, 2014
Negative differential thermal resistance induced by ballistic transport
Wei-Rong Zhong1, Ping Yang, Bao-Quan Ai
1Department of Physics, Centre for Nonlinear Studies, and The Beijing-Hong Kong-Singapore Joint Centre for Nonlinear and Complex Systems (Hong Kong), Hong Kong Baptist University, Kowloon Tong, Hong Kong. wrzhong@hkbu.edu.hk
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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