Dipole oscillations of a Fermi gas in a disordered trap: Damping and localization

Anno: 2009

Autori: Pezzè L., Hambrecht B., Sanchez-Palencia L.

Affiliazione autori: CNRS, Lab Charles Fabry, Inst Opt, F-91127 Palaiseau, France; Univ Paris Sud, F-91127 Palaiseau, France.

Abstract: We theoretically study the dipole oscillations of an ideal Fermi gas in a disordered trap. We show that even weak disorder induces strong damping of the oscillations and we identify a metal-insulator crossover. For very weak disorder, we show that damping results from a dephasing effect related to weak random perturbations of the energy spectrum. For increasing disorder, we show that the Fermi gas crosses over to an insulating regime characterized by strong damping due to the proliferation of localized states.

Giornale/Rivista: EUROPHYSICS LETTERS

Volume: 88 (3)      Da Pagina: 30009-1  A: 30009-6

Maggiori informazioni: This research was supported by the French Centre National de la Recherche Scientifique (CNRS), Agence Nationale de la Recherche (ANR), Ministere de l’Education Nationale, de la Recherche et de la Technologie (MENRT), Triangle de la Physique and Institut Francilien de Recherche sur les Atomes Froids (IFRAF).
Parole chiavi: Anderson Localization; Matter-waves; Transport
DOI: 10.1209/0295-5075/88/30009

Citazioni: 7
dati da “WEB OF SCIENCE” (of Thomson Reuters) aggiornati al: 2025-06-08
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