Interpreting Torsional Oscillator Measurements: Effect of Shear Modulus and Supersolidity
Interpreting Torsional Oscillator Measurements: Effect of Shear Modulus and Supersolidity
复制标题
解释扭转振荡器测量：剪切模量和超固态的影响
DOI：
10.1007/s10909-012-0596-5
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发表时间：
2011
影响因子：
2
通讯作者：
E. Mueller
中科院分区：
文献类型：
--
作者：
J. Reppy;X. Mi;Alexander W. Justin;E. Mueller
扭转振子是研究固体4He超实性的主要仪器。这些振子可以对固态氦的弹性性质敏感，这些弹性性质在超固体现象出现的相同温度范围内显示出异常。在这份报告中，我们提出了一个详细的研究固体的弹性性质的影响的扭转振荡器的周期的各种设计，已被普遍采用在超固体测量。我们将展示如何设计一个振荡器，测量超固体，以及如何设计一个主要测量弹性。我们描述了使用多个频率的TO的弹性和超固体现象的分离。
The torsional oscillator is the chief instrument for investigating supersolidity in solid 4He. These oscillators can be sensitive to the elastic properties of the solid helium, which show anomalies over the same range of temperature in which the supersolid phenomenon appears. In this report we present a detailed study of the influence of the elastic properties of the solid on the periods of torsional oscillators for the various designs that have been commonly employed in supersolid measurements. We show how to design an oscillator which measures supersolidity, and how to design one which predominantly measures elasticity. We describe the use of multiple frequency TOs for the separation of the elastic and supersolid phenomena.