报告题目: |
Spin transport in a Mott insulator of cold atoms |
报告人: |
张昊 |
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MIT 物理
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报告时间: |
2018-04-25 10:00 |
报告地点: |
物理系理科楼C109 |
主办单位: |
物理系 |
简介: |
Ultracold atoms in optical lattices form useful model systems for studying a wide range of many-body physics, including strongly correlated systems with unconventional transport properties. Using a microscope with single-atom resolution, we measure spin transport in the Fermi-Hubbard model using ultracold fermionic 40K atoms in an optical lattice. We measure spin diffusion and conduction in a Mott insulator, and find that the dynamics is driven by super-exchange at strong interactions. The results are compared with numerical linked-cluster expansion (NLCE) calculations of the spin transport coefficients.
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