外文题目: Superexchange-mediated magnetization dynamics with ultracold alkaline-earth atoms in an optical lattice
作者: 朱少兵; 钱军; 王育竹
刊名: Chin. Phys. B
年: 2017 卷: 26 期: 4 文章编号：46702
英文关键词:
alkaline-earth atoms; spin dynamics; spin-exchange; superexchange
SPIN-EXCHANGE INTERACTIONS; MOTT INSULATOR; NEUTRAL ATOMS; MAGNETISM; FERMIONS; PHYSICS; GASES
英文摘要:
Superexchange and inter-orbital spin-exchange interactions are key ingredients for understanding (orbital) quantum magnetism in strongly correlated systems and have been realized in ultracold atomic gases. Here we study the spin dynamics of ultracold alkaline-earth atoms in an optical lattice when the two exchange interactions coexist. In the superexchange interaction dominating regime, we find that the time-resolved spin imbalance shows a remarkable modulated oscillation, which can be attributed to the interplay between local and nonlocal quantum mechanical exchange mechanisms. Moreover, the filling of the long-lived excited atoms affects the collapse and revival of the magnetization dynamics. These observations can be realized in state-dependent optical lattices combined with the state-of-the-art advances in optical lattice clock spectroscopy.


文献类型: 期刊论文
正文语种: English
收录类别: SCI
DOI: 10.1088/1674-1056/26/4/046702


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