Dynamical superfluid response of 4He confined in a nanometer-size channel
Dynamical superfluid response of 4He confined in a nanometer-size channel
复制标题
纳米通道内 4He 的动态超流体响应
DOI：
10.1103/physrevb.88.014502
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发表时间：
2013
期刊：
影响因子：
--
通讯作者：
Masaru Suzuki
中科院分区：
文献类型：
--
作者：
Junko Taniguchi;Kenta Demura;Masaru Suzuki
用双扭振研究了一维纳米通道中液体的超流体响应。对于低频模态，在0.13 MPa下，超流体起始和耗散峰均向低温侧移动了40 mK，且压力的施加略有增强。强频率依赖性表明超流体响应是一种动力学现象。此外，这种依赖性与基于Tomonaga-Luttinger液体模型的理论预测是一致的。
We have studied the superfluid response of liquidconfined in a one-dimensional nanometer-size channel by means of a twofold torsional oscillator at 2000 and 500 Hz. For the lower-frequency mode, both the superfluid onset and the dissipation peak shift to the low-temperature side by 40 mK under 0.13 MPa, and the shift is slightly enhanced by the application of pressure. The strong frequency dependence indicates that the superfluid response is a dynamical phenomenon. Furthermore, this dependence is consistent with the theoretical prediction based on the Tomonaga-Luttinger liquid model.