Heat conductivity in the presence of a quantized degree of freedom
| Autor: | Jun-Wen Mao, You-Quan Li |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2006 |
| Předmět: |
Section (fiber bundle)
Physics Thermal conductivity Condensed matter physics Condensed Matter - Mesoscale and Nanoscale Physics Mesoscale and Nanoscale Physics (cond-mat.mes-hall) General Physics and Astronomy FOS: Physical sciences Temperature exponent Disordered Systems and Neural Networks (cond-mat.dis-nn) Condensed Matter - Disordered Systems and Neural Networks |
| Popis: | We propose a model with a quantized degree of freedom to study the heat transport in quasi-one dimensional system. Our simulations reveal three distinct temperature regimes. In particular, the intermediate regime is characterized by heat conductivity with a temperature exponent $\gamma$ much greater than 1/2 that was generally found in systems with point-like particles. A dynamical investigation indicates the occurrence of non-equipartition behavior in this regime. Moreover, the corresponding Poincar\'e section also shows remarkably characteristic patterns, completely different from the cases of point-like particles. Comment: 7 pages, 4 figures |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|