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Colloquium: Waseem Bakr, Princeton University | Physics

Thursday
Apr 19, 2018
4:10 PM - 5:00 PM

Lewis Lab - 316
16 Memorial Walk East
Bethlehem PA 18015

Margaret C. Vasconcellos
Phone: 610-758-3930
mcv2@lehigh.edu

Waseem Bakr, Department of Physics , Princeton University.

Quantum gas microscopy of atomic Fermi-Hubbard systems.

Ultracold fermions in optical lattices provide a clean physical realization of the celebrated Fermi-Hubbard model of condensed matter, a minimal model believed to contain the essential ingredients for high-temperature superconductivity. Recent advances in the field of quantum gas microscopy have opened up the possibility to probe and manipulate Fermi-Hubbardsystems at the atomic level, enabling quantitative studies in a temperature regime that is challenging for state-of-the-art numerical simulations. In this talk Bakr will report on experiments that probe equilibrium spin and density correlations in the Hubbard model in new regimes, including a repulsive spinimbalanced system and a doped attractive system, which turn out to be related to each other through a mathematical mapping. He will also report on experiments where they measure the transport properties of doped repulsive systems and observe signatures of bad metallic behavior including a linear-in-temperature resistivity that violates the Mott-Ioffe-Regel limit.

Location: LL.316, Refreshments at 3:45PM

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