Superfluid transition in disordered dipolar Fermi gases
| Autor: | G. V. Shlyapnikov, V. I. Yudson, Boris L. Altshuler, Sergey Matveenko |
|---|---|
| Přispěvatelé: | Laboratoire de Physique Théorique et Modèles Statistiques (LPTMS), Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS) |
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Physics
Condensed Matter::Quantum Gases [PHYS]Physics [physics] Condensed matter physics Plane (geometry) Condensed Matter - Superconductivity Transition temperature FOS: Physical sciences Disordered Systems and Neural Networks (cond-mat.dis-nn) Condensed Matter - Disordered Systems and Neural Networks 01 natural sciences 010305 fluids & plasmas Superconductivity (cond-mat.supr-con) Scattering amplitude Superfluidity Momentum Dipole Quantum Gases (cond-mat.quant-gas) 0103 physical sciences Condensed Matter - Quantum Gases 010306 general physics Fermi gas Fermi Gamma-ray Space Telescope |
| Zdroj: | Physical Review A Physical Review A, American Physical Society 2020, 102 (5), ⟨10.1103/PhysRevA.102.053319⟩ |
| ISSN: | 2469-9926 2469-9934 |
| DOI: | 10.1103/PhysRevA.102.053319⟩ |
| Popis: | 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. Comment: 8 pages, 4 figures |
| Databáze: | OpenAIRE |
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