Emergence and control of heat current from strict zero thermal bias

Details Emergence and control of heat current from strict zero thermal bias Emergence and control of heat current from strict zero thermal bias

2009-09-16

arxiv.org/abs/0909.3125v2

Phys. Rev. E 81, 021111 (2010)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4pages, 5figures

Scientific paper

10.1103/PhysRevE.81.021111

It is an ever-growing challenge to develop nano-devices for controlling energy transport. An open question is whether we can create and control heat current at {\it strict zero thermal bias}, and if yes, how to do it. In this paper, we demonstrate that a nonlinear asymmetric system, when pushed out of equilibrium, can produce heat current in the absence of a thermal bias. The emergence and control of heat current over a broad range of parameters are studied. Our results reveal the following three necessary conditions: non-equilibrium source, symmetry breaking, and nonlinearity. We also demonstrate that when heat baths are correlated, symmetry breaking is sufficient to generate heat current.

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