Dissipation due to two-level systems in nano-mechanical devices
release_et4usjo6abhxno4pfhada2enei
by
C. Seoanez,
F. Guinea,
A. H. Castro Neto
2006
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) ≈ Q_0 + C T^1/3,
providing a quantitative description of the experimental data.
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