title: Critical temperature and condensate fraction of a fermion pair condensate.
abstract: We report on measurements of the critical temperature and the temperature dependence of the condensate fraction for a fermion pair condensate of 6Li atoms. Bragg spectroscopy is employed to determine the critical temperature and the condensate fraction after a fast magnetic field ramp to the molecular side of the Feshbach resonance. Our measurements reveal evidence of level off of the critical temperature and limiting behavior of condensate fraction near the unitarity limit.
authors.affiliation: ERATO Macroscopic Quantum Control Project, JST, 2-11-16 Yayoi, Bunkyo-Ku, Tokyo 113-8656, Japan.
authors.forename: Yasuhisa
authors.initials: Y
authors.lastname: Inada
authors.forename: Munekazu
authors.initials: M
authors.lastname: Horikoshi
authors.forename: Shuta
authors.initials: S
authors.lastname: Nakajima
authors.forename: Makoto
authors.initials: M
authors.lastname: Kuwata-Gonokami
authors.forename: Masahito
authors.initials: M
authors.lastname: Ueda
authors.forename: Takashi
authors.initials: T
authors.lastname: Mukaiyama