Dissipation due to two-level systems in nano-mechanical devices
Abstract
We analyze the dissipation of the frequency vibrations of nano-mechanical devices. We show that the coupling between flexural modes and two-level systems leads to sub-ohmic dissipation. The inverse quality factor of the low energy vibrations depends on temperature as Q-1 (T) ≈ Q0 + C T1/3, providing a quantitative description of the experimental data.
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