Dissipation due to two-level systems in nano-mechanical devices

Details Dissipation due to two-level systems in nano-mechanical devices Dissipation due to two-level systems in nano-mechanical devices

2006-11-06

arxiv.org/abs/cond-mat/0611153v3

EPL 78 (2007) 60002

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

6 pages, 4 figures, published version

Scientific paper

10.1209/0295-5075/78/60002

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 $Q^{-1} (T) \approx Q_0 + C T^{1/3}$,
providing a quantitative description of the experimental data.

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