Response of a Mechanical Oscillator in Solid 4He
Response of a Mechanical Oscillator in Solid 4He
复制标题
固体 4He 中机械振荡器的响应
DOI:
10.1007/s10909-013-0930-6
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发表时间:
2013
影响因子:
2
通讯作者:
Ahlstrom S
中科院分区:
文献类型:
--
作者:
Ahlstrom S
We present the first measurements of the response of a mechanical oscillator in solid4He. We use a lithium niobate tuning fork operating in its fundamental resonance mode at a frequency of around 30 kHz. Measurements in solid4He were performed close to the melting pressure. The tuning fork resonance shows substantial frequency shifts on cooling from around 1.5 K to below 10 mK. The response shows an abrupt change at the bcc-hcp transition. At low temperatures, below around 100 mK, the resonance splits into several overlapping resonances.
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