Phonon interference and its effect on thermal conductance in ring-type structures

摘要

We study phonon interference in some ring-type structures theoretically. The phonon transmission minima due to interference are discussed. We find that, by introducing a ring-type structure to a one-dimensional system, the phonon thermal conductance can be reduced by about 50%. This may be used to control phonon heat transport that is important for thermal management and thermoelectric energy conversion.