Comment on ``Can Disorder Induce a Finite Thermal Conductivity in 1D Lattices?''

Details Comment on ``Can Disorder Induce a Finite Thermal Conductivity in 1D Lattices?'' Comment on ``Can Disorder Induce a Finite Thermal Conductivity in 1D Lattices?''

2001-06-18

arxiv.org/abs/cond-mat/0106349v1

Physics

Condensed Matter

Statistical Mechanics

1 page, 1 figure, accepted for publication in Phys. Rev. Lett

Scientific paper

10.1103/PhysRevLett.87.069401

In a recent paper [Phys. Rev. Lett. 86, 63 (2001)], Li et al have reported that the nonequilibrium heat conducting steady state of a disordered harmonic chain is not unique. In this comment we point out that for a large class of stochastic heat baths the uniqueness of the steady state can be proved, and therefore the findings of Li et al could be either due to their use of deterministic heat baths or insufficient equilibration times in the simulations. We give a simple example where the uniquness of the steady state can be explicitly demonstrated.

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