近日，土耳其毕尔肯大学的B.Renklioglu及其研究小组与美国阿克伦大学的Ben Yu-Kuang Hu合作并取得一项新进展。经过不懈努力，他们揭示双层费米气体中的相互偶极拖曳现象。相关研究成果已于2024年6月12日在国际知名学术期刊《物理评论A》上发表。

该研究团队专注于二维自旋极化偶极费米气体在双层系统中的行为，他们计算了层间动量传递随温度的变化，以研究系统的输运特性。研究人员使用哈伯德近似来描述单层内偶极子之间的相关效应和筛选。通过随机相位近似得到了层间偶极子的有效相互作用。

研究人员计算了相互作用强度和层分离距离对拖曳率的依赖关系，并表明存在一个临界距离，低于该临界距离系统是不稳定的。此外，研究人员还计算了与密度波动相关的集体模态的典型表现。

附：英文原文

Title: Mutual dipolar drag in a bilayer Fermi gas

Author: B. Renklioglu, Ben Yu-Kuang Hu, M.O . Oktel, B. Tanatar

Issue&Volume: 2024/06/12

Abstract: We consider two-dimensional spin-polarized dipolar Fermi gases confined in a double-layer system and calculate the momentum transfer between the layers as a function of temperature to investigate the transport properties of the system. We use the Hubbard approximation to describe the correlation effects and the screening between the dipoles within a single layer. The effective interlayer interaction between the dipoles across the layers is obtained by the random-phase approximation. We calculate the interaction strength and the layer separation distance dependence of the drag rate, and we show that there is a critical distance below which the system is unstable. In addition, we calculate the typical behavior of the collective modes related to the density fluctuations.

DOI: 10.1103/PhysRevA.109.063319

Source: https://journals.aps.org/pra/abstract/10.1103/PhysRevA.109.063319