Ultracold heteronuclear fermi-fermi molecules.
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.
Voigt
A-C
AC
Department für Physik der Ludwig-Maximilians-Universität, Schellingstrasse 4, 80799 Munich, Germany. arne.voigt@mpq.mpg.de
Taglieber
M
M
Costa
L
L
Aoki
T
T
Wieser
W
W
Hänsch
T W
TW
Dieckmann
K
K