Feshbach resonances, molecular bound states and prospects of ultracold molecule formation in mixtures of ultracold K and Cs
Feshbach resonances, molecular bound states and prospects of ultracold molecule formation in mixtures of ultracold K and Cs
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DOI：
10.1103/physreva.90.032716
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发表时间：
2014-09
影响因子：
2.9
通讯作者：
Hannah J. Patel;Caroline L. Blackley;S. Cornish;J. Hutson
中科院分区：
文献类型：
--
作者：
Hannah J. Patel;Caroline L. Blackley;S. Cornish;J. Hutson
我们认为生产超冷混合物的K和Cs和形成KC分子的磁缔合的可能性。我们进行耦合通道计算的种间散射长度为KCS39，KCS41，KCS40和特征Feshbach共振由于s波和d波束缚态，宽度范围从低于1 nG到5 G。我们还计算了相应的束缚态能量作为磁场的函数。我们给出了一个一般性的讨论的种内和种间散射长度的组合需要形成低温原子的混合物和冷凝物，并确定有前途的战略冷却和分子形成的所有三种同位素组合的K和Cs。
We consider the possibilities for producing ultracold mixtures of K and Cs and forming KCs molecules by magnetoassociation. We carry out coupled-channel calculations of the interspecies scattering length for KCs39, KCs41, and KCs40 and characterize Feshbach resonances due to s-wave and d-wave bound states, with widths ranging from below 1 nG to 5 G. We also calculate the corresponding bound-state energies as a function of magnetic field. We give a general discussion of the combinations of intraspecies and interspecies scattering lengths needed to form low-temperature atomic mixtures and condensates and identify promising strategies for cooling and molecule formation for all three isotopic combinations of K and Cs.