In this harmonic phonon junction, heat currents obey Fourier's law, thermal conductance peaks when spectra match (with low-T shifts), increases with coupling strength, and remains symmetric under flow reversal despite asymmetry.
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Steady-state phonon heat currents and differential thermal conductance across a junction of two harmonic phonon reservoirs
In this harmonic phonon junction, heat currents obey Fourier's law, thermal conductance peaks when spectra match (with low-T shifts), increases with coupling strength, and remains symmetric under flow reversal despite asymmetry.