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Physical Review A

Feshbach spectroscopy of ultracold mixtures of Li 6 and Dy 164 atoms

Ke Xie, Xi Li, Yu-Yang Zhou, Jian Lin Luo, Shuai Wang, Yu-Zhao Nie, H. Shen, Yu-Ao Chen, Xing-Can Yao, Jian-Wei Pan

Published Feb 26, 2025• 7 citations
Publisher

Abstract

We report on the observation of Feshbach resonances in ultracold $^{6}\mathrm{Li}\text{\ensuremath{-}}^{164}\mathrm{Dy}$ mixtures, where $^{6}\mathrm{Li}$ atoms are respectively prepared in their three lowest spin states and $^{164}\mathrm{Dy}$ atoms are prepared in their lowest-energy state. We observe 21 interspecies scattering resonances over a magnetic-field range from 0 to 702 G using atom loss spectroscopy, three of which exhibit relatively broad widths. These broad resonances provide precise control over the interspecies interaction strength, enabling the study of strongly interacting effects in $^{6}\mathrm{Li}\text{\ensuremath{-}}^{164}\mathrm{Dy}$ mixtures. Additionally, we observe a well-isolated interspecies resonance at 700.1 G, offering a unique platform to explore novel impurity physics, where heavy dipolar $^{164}\mathrm{Dy}$ atoms are immersed in a strongly interacting Fermi superfluid of $^{6}\mathrm{Li}$ atoms.

DOI
10.1103/physreva.111.023327

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