by F. Ferlaino, C. D’Errico, G. Roati, M. Zaccanti, M. Inguscio, G. Modugno, A. Simoni
Abstract:
We perform extensive magnetic Feshbach spectroscopy of an ultracold mixture of fermionic K40 and bosonic Rb87 atoms. The magnetic-field locations of 13 interspecies resonances are 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 K40−Rb87 mixture as (−108±3)a0 and (−205±5)a0, respectively. We also predict accurate scattering lengths and the 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.
Reference:
Feshbach spectroscopy of a K-Rb atomic mixture,
F. Ferlaino, C. D’Errico, G. Roati, M. Zaccanti, M. Inguscio, G. Modugno, A. Simoni,
Phys. Rev. A, volume 73, 2006.
F. Ferlaino, C. D’Errico, G. Roati, M. Zaccanti, M. Inguscio, G. Modugno, A. Simoni,
Phys. Rev. A, volume 73, 2006.
Bibtex Entry:
@article{PhysRevA.73.040702, title = {Feshbach spectroscopy of a K-Rb atomic mixture}, author = {Ferlaino, F. and D'Errico, C. and Roati, G. and Zaccanti, M. and Inguscio, M. and Modugno, G. and Simoni, A.}, journal = {Phys. Rev. A}, volume = {73}, issue = {4}, pages = {040702}, numpages = {4}, year = {2006}, month = {Apr}, abstract = {We perform extensive magnetic Feshbach spectroscopy of an ultracold mixture of fermionic K40 and bosonic Rb87 atoms. The magnetic-field locations of 13 interspecies resonances are 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 K40−Rb87 mixture as (−108±3)a0 and (−205±5)a0, respectively. We also predict accurate scattering lengths and the 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.}, publisher = {American Physical Society}, doi = {10.1103/PhysRevA.73.040702}, url = {http://link.aps.org/doi/10.1103/PhysRevA.73.040702}, arXiv = {http://arxiv.org/abs/cond-mat/0510630} }