Shuttling heat across one-dimensional homogenous nonlinear lattices with a Brownian heat motor.

摘要: We investigate directed thermal heat flux across one-dimensional homogenous nonlinear lattices when no net bias is present on average. A lattice of Fermi-Pasta-Ulam-type or Lennard-Jones-type system connected at both ends to baths which are held the same temperature temporal study two different modulations bath temperatures, namely: (i) a symmetric, harmonic ac driving one only and (ii) mixing drive acting baths. While for case an adiabatic result transport can be derived in terms temperature-dependent conductivity similar such approach fails (ii). Then, (ii), not even sign resulting Brownian motion induced predicted priori. nonvanishing (including nonadiabatic reversal flux) detected dynamical symmetry breaking mechanism conjunction with nonlinearity dynamics. Computer simulations demonstrate that robust against increase sizes. The observed ratchet effect currents quite sizable our studied class structures, thereby making this setup accessible experimental implementation verification.