Ratcheting Heat Flux against a Thermal Bias

Details Ratcheting Heat Flux against a Thermal Bias Ratcheting Heat Flux against a Thermal Bias

2008-04-23

arxiv.org/abs/0804.3630v3

EPL 84 (2008) 40009

Physics

Condensed Matter

Statistical Mechanics

5 pages, 6 figures

Scientific paper

10.1209/0295-5075/84/40009

Merely rocking the temperature in one heat bath can direct a steady heat flux from cold to hot against a non-zero thermal bias in stylized nonlinear lattice junctions that are sandwiched between two heat baths. Likewise, for an average zero-temperature difference between the two contacts a net, ratchet-like heat flux emerges. Computer simulations show that this very heat flux can be controlled and reversed by suitably tailoring the frequency ($\lesssim$ 100 MHz) of the alternating temperature field.

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