Please use this identifier to cite or link to this item: https://doi.org/10.1103/PhysRevB.77.172411
Title: Nonballistic heat conduction in an integrable random-exchange Ising chain studied with quantum master equations
Authors: Yan, Y. 
Wu, C.-Q. 
Casati, G. 
Prosen, T.
Li, B. 
Issue Date: 23-May-2008
Citation: Yan, Y., Wu, C.-Q., Casati, G., Prosen, T., Li, B. (2008-05-23). Nonballistic heat conduction in an integrable random-exchange Ising chain studied with quantum master equations. Physical Review B - Condensed Matter and Materials Physics 77 (17) : -. ScholarBank@NUS Repository. https://doi.org/10.1103/PhysRevB.77.172411
Abstract: We numerically investigate the heat conduction in a random-exchange Ising spin chain by using the quantum master equation. The chain is subject to a uniform transverse field h, while the exchange couplings { Qn } between the nearest neighbor spins are random; the largest size we simulate is up to 10. This model is integrable; i.e., the nearest neighbor level spacing distribution is Poissonian. However, we find clear evidence of nonballistic transport. In the small coupling regime (Qn h), an energy and/or temperature gradient in the bulk of the system is observed and the energy current appears to be proportional to the inverse of the system size. Moreover, we find that in the low and high temperature regimes, the thermal conductivity κ and the specific heat Cv have the same dependence on temperature. The large coupling case (Qn ∼h) is also discussed. © 2008 The American Physical Society.
Source Title: Physical Review B - Condensed Matter and Materials Physics
URI: http://scholarbank.nus.edu.sg/handle/10635/97330
ISSN: 10980121
DOI: 10.1103/PhysRevB.77.172411
Appears in Collections:Staff Publications

Show full item record
Files in This Item:
There are no files associated with this item.

SCOPUSTM   
Citations

17
checked on Oct 12, 2018

WEB OF SCIENCETM
Citations

17
checked on Sep 26, 2018

Page view(s)

23
checked on Sep 28, 2018

Google ScholarTM

Check

Altmetric


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.