Issue |
EPL
Volume 117, Number 6, March 2017
|
|
---|---|---|
Article Number | 60004 | |
Number of page(s) | 4 | |
Section | General | |
DOI | https://doi.org/10.1209/0295-5075/117/60004 | |
Published online | 18 May 2017 |
Thermal conductance of the coupled-rotator chain: Influence of temperature and size
1 Center for Phononics and Thermal Energy Science and School of Physics Science and Engineering, Tongji University 200092 Shanghai, China
2 China-EU Joint Lab for Nanophononics, Tongji University - Shanghai 200092, China
3 Shanghai Key Laboratory of Special Artificial Microstructure Materials and Technology, School of Physics Science and Engineering, Tongji University - Shanghai 200092, China
4 Department of Physics, Faculty of Science, Ege University - 35100 Izmir, Turkey
5 Centro Brasileiro de Pesquisas Fisicas and National Institute for Science and Technology of Complex Systems Rua Dr. Xavier Sigaud 150, 22290-180 Rio de Janeiro, RJ, Brazil
6 Department of Mechanical Engineering, University of Colorado Boulder - Boulder, CO 80309, USA
7 Santa Fe Institute - 1399 Hyde Park Road, Santa Fe, NM 87501, USA
8 Complexity Science Hub Vienna - Josefstadter Strasse 39, 1080 Vienna, Austria
Received: 22 March 2017
Accepted: 3 May 2017
The thermal conductance of a homogeneous 1D nonlinear lattice system with neareast-neighbor interactions has recently been computationally studied in detail by Li et al. (Eur. Phys. J. B, 88 (2015) 182), where its power-law dependence on temperature T for high temperatures is shown. Here, we address its entire temperature dependence, in addition to its dependence on the size N of the system. We obtain a neat data collapse for arbitrary temperatures and system sizes, and numerically show that the thermal conductance curve is quite satisfactorily described by a fat-tailed q-Gaussian dependence on with . Consequently, its asymptotic behavior is given by with .
PACS: 05.20.-y – Classical statistical mechanics / 05.45.Pq – Numerical simulations of chaotic systems
© EPLA, 2017
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