Understanding the superfluid phase diagram in trapped Fermi gases
Understanding the superfluid phase diagram in trapped Fermi gases
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DOI：
10.1103/physreva.73.041601
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发表时间：
2005-12
影响因子：
2.9
通讯作者：
Qijin Chen;C. Regal;M. Greiner;D. Jin;K. Levin
中科院分区：
文献类型：
--
作者：
Qijin Chen;C. Regal;M. Greiner;D. Jin;K. Levin
捕获的超冷费米气体提供了一个系统，可以通过磁场Feshbach共振在BCS和玻色-爱因斯坦凝聚状态之间进行调节。用成对投射费米原子到分子上的扫描技术，实验证明了费米原子对在{sup 40K}K气体中的凝聚。在这篇文章中，我们检查了以前用这种技术在温度-磁场平面上探测相边界的数据。将{sup 40}K数据与理论计算的相图进行了比较，两者符合得很好。
Trapped ultracold Fermi gases provide a system that can be tuned between the BCS and Bose-Einstein condensation regimes by means of a magnetic-field Feshbach resonance. Condensation of fermionic atom pairs in a {sup 40}K gas was demonstrated experimentally by a sweep technique that pairwise projects fermionic atoms onto molecules. In this paper, we examine previous data obtained with this technique that probed the phase boundary in the temperature-magnetic field plane. Comparison of the {sup 40}K data to a theoretically computed phase diagram demonstrates good agreement between the two.