Possible one-dimensional 3He quantum fluid formed in nanopores.
Possible one-dimensional 3He quantum fluid formed in nanopores.
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DOI：
10.1103/physrevlett.94.065301
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发表时间：
2005-02
影响因子：
8.6
通讯作者：
J. Taniguchi;A. Yamaguchi;H. Ishimoto;H. Ikegami;T. Matsushita;N. Wada;S. Gatica;M. W. Cole;F. Ancilotto;S. Inagaki;Y. Fukushima
中科院分区：
文献类型：
--
作者：
J. Taniguchi;A. Yamaguchi;H. Ishimoto;H. Ikegami;T. Matsushita;N. Wada;S. Gatica;M. W. Cole;F. Ancilotto;S. Inagaki;Y. Fukushima
热容量的测量已被降低到5 mK的3He流体膜吸附在一维（1D）纳米尺度的孔，直径为28 A，预镀有4He的1.47原子层。在低的3He密度，热容显示出密度依赖性，Schottky样的峰值接近150 mK渐近的值对应于一个二维玻尔兹曼气体在高温下。峰值行为归因于低温下从2D气体到1D状态的交叉。的1D 3He流体的简并态是由一个主要的线性温度依赖性低于约30 mK。
Heat capacity measurements have been made down to 5 mK for 3He fluid films adsorbed in one-dimensional (1D) nanometer-scale pores, 28 A in diameter, preplated with 4He of 1.47 atomic layers. At low 3He density, the heat capacity shows a density-dependent, Schottky-like peak near 150 mK asymptoting to the value corresponding to a 2D Boltzmann gas at high temperatures. The peak behavior is attributed to the crossover from a 2D gas to a 1D state at low temperatures. The degenerate state of the 1D 3He fluid is indicated by a predominantly linear temperature dependence below about 30 mK.