203 citations · 439 across the 18 of their papers we have counts for
9 papers · 1 filter
An experimental platform for studying the heteronuclear Efimov effect with an ultracold mixture of Li and Cs atoms
Eleonora Lippi, Manuel Gerken, Stephan Häfner +10
We present the experimental apparatus enabling the observation of the heteronuclear Efimov effect in an optically trapped ultracold mixture of Li-Cs with high-resolutio…
Fermions meet two bosons -- the heteronuclear Efimov effect revisited
Binh Tran, Michael Rautenberg, Manuel Gerken +7
In this article, we revisit the heteronuclear Efimov effect in a Bose-Fermi mixture with large mass difference in the Born-Oppenheimer picture. As a specific example, we consider t…
High partial-wave Feshbach resonances in an ultracold Li-Cs mixture
Bing Zhu, Stephan Häfner, Binh Tran +4
We measure higher partial wave Feshbach resonances in an ultracold mixture of fermionic Li and bosonic Cs by magnetic field dependent atom-loss spectroscopy. For the $p…
Spin-rotation coupling in p-wave Feshbach resonances
Bing Zhu, Stephan Häfner, Binh Tran +4
We report evidence for spin-rotation coupling in -wave Feshbach resonances in an ultracold mixture of fermionic Li and bosonic Cs lifting the commonly observed degen…
Role of the intraspecies scattering length in the Efimov scenario with large mass difference
Stephan Häfner, Juris Ulmanis, Eva D. Kuhnle +3
We experimentally and theoretically study the effect of the intraspecies scattering length onto the heteronuclear Efimov scenario, following up on our earlier observation of Efimov…
Heteronuclear Efimov scenario with positive intraspecies scattering length
Juris Ulmanis, Stephan Häfner, Rico Pires +4
We investigate theoretically and experimentally the heteronuclear Efimov scenario for a three-body system that consists of two bosons and one distinguishable particle with positive…
Analyzing Feshbach resonances -- A Li -Cs case study
Rico Pires, Marc Repp, Juris Ulmanis +7
We provide a comprehensive comparison of a coupled channels calculation, the asymptotic bound state model (ABM), and the multichannel quantum defect theory (MQDT). Quantitative res…
Observation of Efimov Resonances in a Mixture with Extreme Mass Imbalance
R. Pires, J. Ulmanis, S. Häfner +4
We observe two consecutive heteronuclear Efimov resonances in an ultracold Li-Cs mixture by measuring three-body loss coefficients as a function of magnetic field near a Feshbach r…
Observation of interspecies Li-Cs Feshbach resonances
M. Repp, R. Pires, J. Ulmanis +4
We report on the observation of nineteen interspecies Feshbach resonances in an optically trapped ultracold Bose-Fermi mixture of ^{133}Cs and ^{6}Li in the two energetically lowes…