期刊
PHYSICAL REVIEW B
卷 81, 期 7, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.81.073410
关键词
-
资金
- EPSRC (U.K.) [EP/E03442X/1, EP/C540182/1]
- EPSRC [EP/E03442X/1] Funding Source: UKRI
- Engineering and Physical Sciences Research Council [EP/C540182/1, EP/E03442X/1] Funding Source: researchfish
We present measurements of the dissipation and frequency shift in gold nanomechanical resonators at temperatures down to 10 mK. The resonators were fabricated as doubly clamped beams above a GaAs substrate and actuated magnetomotively. Measurements on beams with frequencies 7.95 and 3.87 MHz revealed that from 30 to 500 mK the dissipation increases with temperature as T-0.5, with saturation occurring at higher temperatures. The relative frequency shift of the resonators increases logarithmically with temperature up to at least 400 mK. Similarities with the behavior of bulk amorphous solids suggest that the dissipation in our resonators is dominated by two-level systems.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据