Degenerate Fermi Gas of 87Sr

被引：181

作者：

DeSalvo, B. J. ^{[1
]}

Yan, M. ^{[1
]}

Mickelson, P. G. ^{[1
]}

de Escobar, Y. N. Martinez ^{[1
]}

Killian, T. C. ^{[1
]}

机构：

[1] Rice Univ, Dept Phys & Astron, Houston, TX 77251 USA

来源：

PHYSICAL REVIEW LETTERS | 2010年 / 105卷 / 03期

基金：

美国国家科学基金会;

关键词：

ULTRACOLD GASES; ATOMS; SUPERFLUIDITY;

D O I：

10.1103/PhysRevLett.105.030402

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We report quantum degeneracy in a gas of ultracold fermionic Sr-87 atoms. By evaporatively cooling a mixture of spin states in an optical dipole trap for 10.5 s, we obtain samples well into the degenerate regime with T/T-F = 0.26(-0.06)(+0.05). The main signature of degeneracy is a change in the momentum distribution as measured by time-of-flight imaging, and we also observe a decrease in evaporation efficiency below T/T-F similar to 0.5.

引用

页数：4

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