We show the emergence of a strongly interacting Bose-Fermi mixture from a two-component Fermi mixture with population imbalance. By analyzing in situ density profiles of 6Li atoms in the BCS-BEC crossover regime, we identify a critical interaction strength, beyond which all minority atoms pair up with majority atoms and form a Bose condensate. This is the regime where the system can be effectively described as a boson-fermion mixture. We determine the dimer-fermion and dimer-dimer scattering lengths and beyond-mean-field contributions. Our study realizes a gedanken experiment of bosons immersed in a Fermi sea of one of their constituents, revealing the composite nature of the bosons.

Shin, Y.I., Schirotzek, A., Schunck, C., & Ketterle, W. (2008). Realization of a strongly interacting bose-fermi mixture from a two-component fermi gas. PHYSICAL REVIEW LETTERS, 101(7), 070404 [10.1103/PhysRevLett.101.070404].

Realization of a strongly interacting bose-fermi mixture from a two-component fermi gas

SCHUNCK, CHRISTIAN;
2008

Abstract

We show the emergence of a strongly interacting Bose-Fermi mixture from a two-component Fermi mixture with population imbalance. By analyzing in situ density profiles of 6Li atoms in the BCS-BEC crossover regime, we identify a critical interaction strength, beyond which all minority atoms pair up with majority atoms and form a Bose condensate. This is the regime where the system can be effectively described as a boson-fermion mixture. We determine the dimer-fermion and dimer-dimer scattering lengths and beyond-mean-field contributions. Our study realizes a gedanken experiment of bosons immersed in a Fermi sea of one of their constituents, revealing the composite nature of the bosons.
Pubblicato
Rilevanza internazionale
Articolo
Esperti anonimi
Settore FIS/01 - Fisica Sperimentale
English
Shin, Y.I., Schirotzek, A., Schunck, C., & Ketterle, W. (2008). Realization of a strongly interacting bose-fermi mixture from a two-component fermi gas. PHYSICAL REVIEW LETTERS, 101(7), 070404 [10.1103/PhysRevLett.101.070404].
Shin, Y; Schirotzek, A; Schunck, C; Ketterle, W
Articolo su rivista
File in questo prodotto:
Non ci sono file associati a questo prodotto.

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/2108/189665
Citazioni
  • ???jsp.display-item.citation.pmc??? 2
  • Scopus 78
  • ???jsp.display-item.citation.isi??? 71
social impact