Multi-resonance of energy transport and absence of heat pump in a force-driven lattice

Details Multi-resonance of energy transport and absence of heat pump in a force-driven lattice Multi-resonance of energy transport and absence of heat pump in a force-driven lattice

2011-02-21

arxiv.org/abs/1102.4113v2

Physical Review E 84, 031122 (2011)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

7+ pages, 8 figures. To appear in Phys. Rev. E

Scientific paper

10.1103/PhysRevE.84.031122

Energy transport control in low dimensional nano-scale systems has attracted much attention in recent years. In this paper, we investigate the energy transport properties of Frenkel-Kontorova lattice subject to a periodic driving force, in particular, the resonance behavior of the energy current by varying the external driving frequency. It is discovered that in certain parameter ranges, multiple resonance peaks, instead of a single resonance, emerge. By comparing the nonlinear lattice model with a harmonic chain, we unravel the underlying physical mechanism for such resonance phenomenon. Other parameter dependencies of the resonance behavior are examined as well. Finally, we demonstrate that heat pumping is actually absent in this force-driven model.

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