Surface Two-level State Dissipation in Single-Crystalline Gold Nanomechanical Resonators

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We study the intrinsic dissipation in nanomechanical resonators fabricated with synthetic singlecrystalline gold nanowires. Contrary to the etched nanostructures, the measured resonance frequencies and damping rates unambiguously demonstrate temperature dependence, as predicted by the standard two-level tunneling-state (TLS) theory. We compare the data to a model assuming a thin amorphous layer on the nanowire surface. The deduced TLS parameters are consistent with bulk poly(methyl methacrylate) (PMMA) data, confirming the presence of residual PMMA on the surface as the TLS host.
Publisher
KOREAN PHYSICAL SOC
Issue Date
2017-02
Language
English
Article Type
Article
Citation

JOURNAL OF THE KOREAN PHYSICAL SOCIETY, v.70, no.3, pp.L225 - L228

ISSN
0374-4884
DOI
10.3938/jkps.70.225
URI
http://hdl.handle.net/10203/223280
Appears in Collection
CH-Journal Papers(저널논문)
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