Dresden 2011 – wissenschaftliches Programm

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A: Fachverband Atomphysik

A 17: Ultra-cold atoms, ions and BEC IV (with Q)

A 17.3: Vortrag

Mittwoch, 16. März 2011, 17:00–17:15, BAR 205

Observation of new Feshbach Resonances in Sodium-Lithium Mixtures — •Tobias Schuster, Raphael Scelle, Arno Trautmann, Steven Knoop, and Markus K. Oberthaler — Kirchhoff Institut für Physik, Universität Heidelberg, Im Neuenheimer Feld 227, 69120 Heidelberg

We report on studies of Feshbach resonances in an ultracold Bose-Fermi mixture of ²³Na and ⁶Li. The experimentally observed spectra of resonances cover magnetic fields of more than 2kG and different spin channels. Our findings are explained in terms of the Asymptotic Bound-state Model, which gives a comprehensive explanation of our experimental results, differing substantially from previous theoretical predictions [1]. Possible applications of this ultracold Bose-Fermi mixture are discussed.

M. Gacesa, P. Pellegrini, and R. Cote, Phys. Rev. A 78, 010701(R) (2008)