Two-dimensional Fermi liquid with attractive interactions
Physical Review Letters, 2012•APS
We realize and study an attractively interacting two-dimensional Fermi liquid. Using
momentum-resolved photoemission spectroscopy, we measure the self-energy, determine
the contact parameter of the short-range interaction potential, and find their dependence on
the interaction strength. We successfully compare the measurements to a theoretical
analysis, properly taking into account the finite temperature, harmonic trap, and the
averaging over several two-dimensional gases with different peak densities.
momentum-resolved photoemission spectroscopy, we measure the self-energy, determine
the contact parameter of the short-range interaction potential, and find their dependence on
the interaction strength. We successfully compare the measurements to a theoretical
analysis, properly taking into account the finite temperature, harmonic trap, and the
averaging over several two-dimensional gases with different peak densities.
We realize and study an attractively interacting two-dimensional Fermi liquid. Using momentum-resolved photoemission spectroscopy, we measure the self-energy, determine the contact parameter of the short-range interaction potential, and find their dependence on the interaction strength. We successfully compare the measurements to a theoretical analysis, properly taking into account the finite temperature, harmonic trap, and the averaging over several two-dimensional gases with different peak densities.
American Physical Society