2020/10/20 by Miguel Angel Otero Simón, M. A. Simón, Aitor Alaña +5
Chemistry · Engineering · Materials Science · Physics and Astronomy · #Advanced Thermodynamics and Statistical Mechanics #Chemistry #Coupling (piping) #Harmonic #Harmonic oscillator #Materials science #Mechanics #Nonlinear system #Physics #Power (physics) #Quantum mechanics #Rectification #Steady state (chemistry) #Thermal Radiation and Cooling Technologies #Thermal properties of materials #Thermodynamics #cond-mat.stat-mech #quant-ph
paper · pdf · doi:10.1103/physreve.103.012134
published as Phys. Rev. E 103, 012134 (2021)
arxiv created 2020/10/20 · openalex publication_date 2021/01/27 · arxiv updated 2021/02/03 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We study heat rectification in a minimalistic model composed of two unequal atoms subjected to linear forces and in contact with effective Langevin baths induced by Doppler lasers. Analytic expressions of the heat currents in the steady state are spelled out. Asymmetric heat transport is found in this linear system if both the bath temperatures and the temperature-dependent bath-system couplings are exchanged. The model can be realized with two ions in either common or individual traps. This physical setting allows for a natural temperature dependence of the coupling to the baths. We also explore the parameter space of the model to optimize asymmetric heat current and find conditions for maximal rectification. High rectification corresponds to a good match of the power spectra of the ions for forward temperature bias and mismatch for reverse bias, which may be understood by the behavior of dissipative normal modes.