We investigate the possibility of forming Li+Yb ultracold molecules by magnetoassociation in mixtures of ultracold atoms. We find that magnetically tunable Feshbach resonances exist, but are extremely narrow for even-mass ytterbium isotopes, which all have zero spin. For odd-mass Yb isotopes, however, there is a new mechanism due to hyperfine coupling between the electron spin and the Yb nuclear magnetic moment. This mechanism produces Feshbach resonances for fermionic Yb isotopes that can be more than 2 orders of magnitude larger than for the bosonic counterparts.We investigate the possibility of forming Li+Yb ultracold molecules by magnetoassociation in mixtures of ultracold atoms. We find that magnetically tunable Feshbach resonances exist, but are extremely narrow for even-mass ytterbium isotopes, which all have zero spin. For odd-mass Yb isotopes, however, there is a new mechanism due to hyperfine coupling between the electron spin and the Yb nuclear magnetic moment. This mechanism produces Feshbach resonances for fermionic Yb isotopes that can be more than 2 orders of magnitude larger than for the bosonic counterparts.

arXiv:1108.1827Physical Review LettersJan 25, 201280 citations

Dynamics of Feshbach molecules in an ultracold three-component mixture

Alexander Y. Khramov, Anders H. Hansen, Alan O. Jamison +2 more

We present investigations of the formation rate and collisional stability of lithium Feshbach molecules in an ultracold three-component mixture composed of two resonantly interacting fermionic ${}^{6}$ Li spin states and bosonic ${}^{174}$ Yb. We observe long molecule lifetimes ( $>100$ ms) even in the presence of a large ytterbium bath and extract reaction rate coefficients of the system. We find good collisional stability of the mixture in the unitary regime, opening new possibilities for studies and probes of strongly interacting quantum gases in contact with a bath species.We present investigations of the formation rate and collisional stability of lithium Feshbach molecules in an ultracold three-component mixture composed of two resonantly interacting fermionic ${}^{6}$Li spin states and bosonic ${}^{174}$Yb. We observe long molecule lifetimes ($>100$ ms) even in the presence of a large ytterbium bath and extract reaction rate coefficients of the system. We find good collisional stability of the mixture in the unitary regime, opening new possibilities for studies and probes of strongly interacting quantum gases in contact with a bath species.

arXiv:1207.2187Physical Review ASep 10, 201216 citations

Theory of Ultracold Feshbach Molecules

Thorsten Köhler, Thomas M. Hanna, Hugo E. L. Martay

CRC Press eBooksJun 25, 20090 citations

Theory of Ultracold Feshbach Molecules

Thomas M. Hanna, Hugo E. L. Martay, Thorsten Köhler

Jun 25, 20091 citation

We present investigations of the formation rate and collisional stability of lithium Feshbach molecules in an ultracold three-component mixture composed of two resonantly interacting fermionic

{}^{6}

Li spin states and bosonic

{}^{174}

Yb. We observe long molecule lifetimes (

>100

ms) even in the presence of a large ytterbium bath and extract reaction rate coefficients of the system. We find good collisional stability of the mixture in the unitary regime, opening new possibilities for studies and probes of strongly interacting quantum gases in contact with a bath species.