Quantum degenerate mixture of ytterbium and lithium atoms
Quantum degenerate mixture of ytterbium and lithium atoms
We have produced a quantum degenerate mixture of fermionic alkali-metal ${}^{6}$Li and bosonic spin-singlet ${}^{174}$Yb gases. This was achieved using sympathetic cooling of lithium atoms by evaporatively cooled ytterbium atoms in a far-off-resonant optical dipole trap. We observe the coexistence of Bose-condensed ($T/{T}_{\mathrm{c}}\ensuremath{\simeq}0.8$) ${}^{174}$Yb with $2.3\ifmmode\times\else\texttimes\fi{}{10}^{4}$ atoms and Fermi degenerate …