Observation of low-field Fano-Feshbach resonances in ultracold gases of dysprosium

被引:91
|
作者
Baumann, Kristian
Burdick, Nathaniel Q.
Lu, Mingwu
Lev, Benjamin L. [1 ]
机构
[1] Stanford Univ, Dept Appl Phys, Stanford, CA 94305 USA
来源
PHYSICAL REVIEW A | 2014年 / 89卷 / 02期
基金
美国国家科学基金会;
关键词
CESIUM; ATOMS;
D O I
10.1103/PhysRevA.89.020701
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
We report the observation of resonance like loss in the trap population of ultracold dysprosium as a function of magnetic field, which we attribute to anisotropy-induced Fano-Feshbach resonances arising from Dy's large magnetic dipole moment and nonzero electronic orbital angular momentum. We recorded these resonances for four different isotopes, three bosonic and one fermionic, over a field range of 0-6 G and show that the number of resonances changes significantly as a function of temperature, even in the nK regime. Most of the observed resonances are of very narrow width. The fermionic isotope, unlike its bosonic counterparts, possesses nonzero nuclear spin and exhibits a much higher density of resonances.
引用
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页数:5
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