Please use this identifier to cite or link to this item:
http://hdl.handle.net/2289/3619
Title: | Crossover from ballistic to diffusive thermal transport in quantum Langevin dynamics study of a harmonic chain connected to self-consistent reservoirs |
Authors: | Roy, Dibyendu |
Issue Date: | Jun-2008 |
Publisher: | American Physical Society |
Citation: | Physical Review E, 2008, Vol.77, 062102 |
Abstract: | Through an exact analysis using quantum Langevin dynamics, we demonstrate the crossover from ballistic to diffusive thermal transport in a harmonic chain with each site connected to Ohmic heat reservoirs. The temperatures of the two heat baths at the boundaries are specified from the beginning, whereas the temperatures of the interior heat reservoirs are determined self-consistently by demanding that in the steady state, on average, there is no heat current between any such (self-consistent) reservoir and the harmonic chain. The essence of our study is that the effective mean free path separating the ballistic regime of transport from the diffusive one emerges naturally. |
Description: | Open Access |
URI: | http://hdl.handle.net/2289/3619 |
ISSN: | E-ISSN: 1550-2376 P-ISSN: 1539-3755 |
Alternative Location: | http://dx.doi.org/10.1103/PhysRevE.77.062102 http://arxiv.org/abs/0803.0278 |
Copyright: | 2008 American Physical Society |
Appears in Collections: | Research Papers (TP) |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
2008 PRE V77 062102.pdf | Open Access | 88.89 kB | Adobe PDF | View/Open |
Items in RRI Digital Repository are protected by copyright, with all rights reserved, unless otherwise indicated.