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Superfluid transition in disordered dipolar Fermi gases

Abstract : We consider a weakly interacting two-component Fermi gas of dipolar particles (magnetic atoms or polar molecules) in the two-dimensional geometry. The dipole-dipole interaction (together with the short-range interaction at Feshbach resonances) for dipoles perpendicular to the plane of translational motion may provide a superfluid transition. The dipole-dipole scattering amplitude is momentum dependent, which violates the Anderson theorem claiming the independence of the transition temperature on the presence of weak disorder. We have shown that the disorder can strongly increase the critical temperature (up to 10 nK at realistic densities). This opens wide possibilities for the studies of the superfluid regime in weakly interacting Fermi gases, which was not observed so far.
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Contributor : Claudine Le Vaou <>
Submitted on : Friday, November 20, 2020 - 4:47:06 PM
Last modification on : Sunday, November 22, 2020 - 3:27:13 AM

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  • HAL Id : hal-03017056, version 1
  • ARXIV : 2006.10167



S. I. Matveenko, V. I. Yudson, B. L. Altshuler, G. V. Shlyapnikov. Superfluid transition in disordered dipolar Fermi gases. Physical Review A, American Physical Society 2020. ⟨hal-03017056⟩



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