https://doi.org/10.1140/epjb/s10051-025-00921-6
Regular Article - Statistical and Nonlinear Physics
How does pressure influence heat conduction for 1D nonlinear lattices with symmetric and asymmetric interactive potentials?
Institute of Systems Science and Department of Physics, College of Information Science and Engineering, Huaqiao University, 361021, Xiamen, China
Received:
2
November
2024
Accepted:
7
April
2025
Published online:
17
April
2025
Temperature and pressure are the two fundamental state parameters for the thermodynamical systems. It is known that the temperature can influence the heat conduction via the nonlinear properties of the 1D nonlinear lattices. However, it is not clear how does the pressure influence the heat conduction for these systems. In this work, the specific heat, sound velocity and phonon relaxation time, three key components of heat conductivity for the 1D nonlinear lattices are calculated via numerical simulations with applied external pressure. The results show that the dominant contribution for the change of heat conduction adjusted by the pressure comes from the phonon relaxation time. It is also found that the pressure influence of heat conduction is related with the potential symmetry of the 1D nonlinear lattices. It is the total pressure rather than the external pressure which mostly determines the heat conductivity.
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© The Author(s), under exclusive licence to EDP Sciences, SIF and Springer-Verlag GmbH Germany, part of Springer Nature 2025
Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
