| Autor: |
Tongli Wei, Yaojin Li, Jinxia Cheng, Chenglong Jia |
| Jazyk: |
angličtina |
| Rok vydání: |
2019 |
| Předmět: |
|
| Zdroj: |
New Journal of Physics, Vol 21, Iss 12, p 123003 (2019) |
| Druh dokumentu: |
article |
| ISSN: |
1367-2630 |
| DOI: |
10.1088/1367-2630/ab5627 |
| Popis: |
Finite-size effect of the thermal conductivity in one dimensional chain is theoretically investigated with a phenomenological model. Boundary temperature dropping and the spectrum-dependent linear temperature profile within the chain are given self-consistently at high temperatures. A general formula of thermal conductivity is presented and a good agreement with the molecular dynamics simulations is obtained. It is found that while ${\rm{d}}\tfrac{1}{\kappa }/{\rm{d}}\tfrac{1}{{L}}$ decreases with increasing of 1/ L monotonically, the well known linear dependence of thermal resistance 1/ κ on the reciprocal length 1/ L of systems is, however, valid only in two limit cases of $1/L\to \infty $ and/or $1/L\to 0$ . |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
|
