报告题目：Spin transport in a Mott insulator of cold atoms

报 告 人：张昊，MIT

报告时间：2018-04-25 10:00

报告地点：物理系理科楼C109

报告摘要：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.