Plasmon localization and relaxation, and thermal transport in one-dimensional conductors
arXiv:1906.03968 · doi:10.1103/PhysRevB.100.115153
Abstract
We study the localization and decay properties as well as the thermal conductance of one-dimensional plasmons. Our model contains a Luttinger-liquid part with spatially random plasmon velocity and interaction parameter as well as a nonlinearity that is cubic in density. The scaling of the decay rate of plasmons is obtained in several regimes. At sufficiently high frequencies, it describes the inelastic life time of localized plasmon excitations that crosses over to the clean result with lowering frequencies. For higher frequencies, we analyze implications of many-body-localization effects that lead to a suppression of the decay rate. We find that the thermal conductance depends in a non-trivial fashion on the system size . Specifically, it scales as for sufficiently short wires and crosses over to scaling for longer wires.
arXiv comment12 pages, 3 figures
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