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Two-Dimensional Fermi Liquid with Attractive Interactions

Authors
Fröhlich, B.
Feld, M.
Vogt, E.
Koschorreck, M.
Köhl, M.
Published in Physical Review Letters. 2012, vol. 109, no. 13, p. 130403
Abstract 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.
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FRÖHLICH, B. et al. Two-Dimensional Fermi Liquid with Attractive Interactions. In: Physical Review Letters, 2012, vol. 109, n° 13, p. 130403. https://archive-ouverte.unige.ch/unige:23853

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Deposited on : 2012-11-07

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