KIP publications

 
year 2012
author(s) T. Schuster, R. Scelle, A. Trautmann, S. Knoop, M. K. Oberthaler, M. M. Haverhals, M. R. Goosen, S. J. J. M. F. Kokkelmans and E. Tiemann
title Feshbach spectroscopy and scattering properties of ultracold Li+Na mixtures
KIP-Nummer HD-KIP 12-31
KIP-Gruppe(n) F17,F21
document type Paper
Keywords Feshbach Resonances Bose-Fermi Mixture NaLi Sodium Lithium Scattering Length Coupled-Channel
source PHYSICAL REVIEW A, 2012, Vol. 85, 042721, arXiv:1202.1199
doi 10.1103/PhysRevA.85.042721
Abstract (en)

We have observed 26 interspecies Feshbach resonances at fields up to 2050 G in ultracold 6Li+23Na mixtures for different spin-state combinations. Applying the asymptotic bound-state model to assign the resonances, we found that most resonances have d-wave character. This analysis serves as guidance for a coupled-channel calculation, which uses modified interaction potentials to describe the positions of the Feshbach resonances well within the experimental uncertainty and to calculate their widths. The scattering length derived from the improved interaction potentials is experimentally confirmed and deviates from previously reported values in sign and magnitude. We give prospects for 7Li+23Na and predict broad Feshbach resonances suitable for tuning.

bibtex
@article{praschuster2012,
  author   = {T. Schuster, R. Scelle, A. Trautmann, S. Knoop, M. K. Oberthaler, M. M. Haverhals, M. R. Goosen, S. J. J. M. F. Kokkelmans and E. Tiemann     },
  title    = {Feshbach spectroscopy and scattering properties of ultracold Li+Na mixtures},
  journal  = {PHYSICAL REVIEW A, arXiv:1202.1199 },
  year     = {2012},
  volume   = {85},
  pages    = {042721}
}
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