Erlangen 2018 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 48: Quantum Gases (Fermions) III
Q 48.6: Vortrag
Mittwoch, 7. März 2018, 15:15–15:30, K 1.022
Spin-rotation coupling in Feshbach resonances of higher partial waves — •Binh Tran1, Stephan Häfner1, Bing Zhu1, Manuel Gerken1, Juris Ulmanis1, Eberhard Tiemann2, and Matthias Weidemüller1,3 — 1Physikalisches Institut, Universität Heidelberg, Im Neuenheimer Feld 226, 69120 Heidelberg, Germany — 2Institut für Quantenoptik, Leibniz Universität Hannover, Welfengarten 1, 30167 Hannover, Germany — 3Shanghai Branch, University of Science and Technology of China, Shanghai 201315, China
We report evidence for spin-rotation (SR) coupling in an ultracold mixture of fermionic 6Li and bosonic 133Cs by magnetic field dependent atom-loss spectroscopy. For the p-wave (l = 1) Feshbach resonances we observe a triplet structure of different ml components. We attribute the splitting of the ml=±1 component to electronic SR coupling. The size of the SR coupling constant in the highest vibrational state of LiCs is determined to be |γ|= 0.000566(50) in units of the effective rotational constant. The SR-induced splitting is estimated for all other bialkali systems, suggesting that SR coupling has to be considered when classifying the p-wave superfluid phases in spin-polarized fermions.