Thermodynamics of an Attractive 2D Fermi Gas.
Thermodynamics of an Attractive 2D Fermi Gas.
复制标题
DOI：
10.1103/physrevlett.116.045302
复制
发表时间：
2015-08
影响因子：
8.6
通讯作者：
K. Fenech;P. Dyke;T. Peppler;M. Lingham;S. Hoinka;Hui Hu;C. Vale
中科院分区：
文献类型：
--
作者：
K. Fenech;P. Dyke;T. Peppler;M. Lingham;S. Hoinka;Hui Hu;C. Vale
物质的热力学性质可以方便地表示为状态方程中变量之间的函数关系。在这里，我们实验确定的压缩性，密度和压力状态方程的吸引力的2D费米气体在正常阶段的温度和相互作用强度的函数。在2D中，相互作用的气体表现出与3D中所发现的性质不同的特征。这在归一化密度状态方程中是明显的，其在对应于从经典到量子行为的交叉的中间密度处达到峰值。
Thermodynamic properties of matter are conveniently expressed as functional relations between variables known as equations of state. Here we experimentally determine the compressibility, density, and pressure equations of state for an attractive 2D Fermi gas in the normal phase as a function of temperature and interaction strength. In 2D, interacting gases exhibit qualitatively different features to those found in 3D. This is evident in the normalized density equation of state, which peaks at intermediate densities corresponding to the crossover from classical to quantum behavior.