Hamilton Colloquium Series: Waseem Bakr, Princeton University, "Quantum Gas Microscopy of Strongly Interacting Fermions in Optical Lattices" Jadwin A10

Thu, Sep 20, 2018, 4:00 pm

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-Hubbard systems at the atomic level, enabling quantitative studies at temperatures that are challenging for state-of-the-art simulations on classical computers. In this talk I will report on experiments that probe equilibrium spin and density correlations in the Hubbard model in new regimes, including a repulsive spin-imbalanced system and a doped attractive system, which are related to each other through a mathematical mapping. I will also report on experiments where we measure the transport properties of doped repulsive systems. We find that the resistivity exhibits a linear temperature dependence and shows no evidence of saturation, two characteristic signatures of a bad metal.

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Location: 
Jadwin A10
Sponsor(s): 
Department of Physics
Audience: 
A free lecture open to the public.
Speaker(s):