Feshbach spectroscopy of a K-Rb atomic mixture
Other Condensed Matter
2009-11-11 v2
Abstract
We perform extensive magnetic Feshbach spectroscopy of an ultracold mixture of fermionic 40K and bosonic 87Rb atoms. The magnetic-field locations of 14 interspecies resonances is used to construct a quantum collision model able to predict accurate collisional parameters for all K-Rb isotopic pairs. In particular we determine the interspecies s-wave singlet and triplet scattering lengths for the 40K-87Rb mixture as -111 +/- 5 Bohr and -215 +/- 10 Bohr respectively. We also predict accurate scattering lengths and position of Feshbach resonances for the other K-Rb isotopic pairs. We discuss the consequences of our results for current and future experiments with ultracold K-Rb mixtures.
Keywords
Cite
@article{arxiv.cond-mat/0510630,
title = {Feshbach spectroscopy of a K-Rb atomic mixture},
author = {Francesca Ferlaino and Chiara D'Errico and Giacomo Roati and Matteo Zaccanti and Massimo Inguscio and Giovanni Modugno and Andrea Simoni},
journal= {arXiv preprint arXiv:cond-mat/0510630},
year = {2009}
}
Comments
5 pages, revised version