title: Ultracold heteronuclear fermi-fermi molecules.
abstract: We report on the first creation of ultracold bosonic heteronuclear molecules of two fermionic species, 6Li and 40K, by a magnetic field sweep across an interspecies s-wave Feshbach resonance. This allows us to associate up to 4x10(4) molecules with high efficiencies of up to 50%. Using direct imaging of the molecules, we measure increased lifetimes of the molecules close to resonance of more than 100 ms in the molecule-atom mixture stored in a harmonic trap.
authors.affiliation: Department für Physik der Ludwig-Maximilians-Universität, Schellingstrasse 4, 80799 Munich, Germany. arne.voigt@mpq.mpg.de
authors.forename: A-C
authors.initials: AC
authors.lastname: Voigt
authors.forename: M
authors.initials: M
authors.lastname: Taglieber
authors.forename: L
authors.initials: L
authors.lastname: Costa
authors.forename: T
authors.initials: T
authors.lastname: Aoki
authors.forename: W
authors.initials: W
authors.lastname: Wieser
authors.forename: T W
authors.initials: TW
authors.lastname: Hänsch
authors.forename: K
authors.initials: K
authors.lastname: Dieckmann