Helium-4 Bose fluids formed in one-dimensional 18 A diameter pores.
Helium-4 Bose fluids formed in one-dimensional 18 A diameter pores.
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Helium-4 玻色流体在一维 18 A 直径的孔隙中形成。
DOI：
10.1103/physrevlett.86.4322
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发表时间：
2001
影响因子：
8.6
通讯作者：
Y. Fukushima
中科院分区：
文献类型：
--
作者：
N. Wada;J. Taniguchi;H. Ikegami;S. Inagaki;Y. Fukushima
一维玻色流体是通过将~ 4 He原子吸附在直径约为18 A的一维孔壁上实现的。玻色流体出现以上的吸附量后，孔壁被惰性4 He原子的涂层。在低温下，观察到流体的热容具有温度线性项。这对应于一维孔隙中玻色流体的声子热容。我们估计了一维玻色流体的声子速度和相互作用。
Bose fluids restricted in one dimension (1D) are realized by adsorbing 4He atoms on the 1D pore walls with a diameter of about 18 A. The Bose fluid appears above an adsorbed amount after the pore walls are coated with the inert 4He atoms. Heat capacity of the fluid was observed to have a temperature-linear term at low temperatures. This corresponds to the phonon heat capacity of the Bose fluid in the 1D pores. We estimate the phonon velocity and the interaction of the 1D Bose fluid.